The best security window films, compared.
Top pick: BDF S4MC 4 mil – Only named safety-glazing test in the set, ANSI Z97.1 Class B and CPSC Category 1, with the highest stars at 4.3 from 424. Best value: Shackcom 4 mil roll – Usable United Kingdom review text and about 1.32 m² at about £13.99, the generous area among the mid-price 4 mil rolls. Updated October 2026.
Security window film sold for UK homes is a clear polyester sheet with a pressure-sensitive adhesive. It is meant to hold broken glass on the film. The and calls it safety film when the filmed pane can be classed to BS EN 12600, and security film when it can be classed to BS EN 356 or BS EN 13541. Titles on amazon.co.uk use anti-shatter, safety, and security for the same 4 mil rolls, so a certificate matters more than the adjective. You judge a roll by thickness, width, a named test, and whether the reviews describe clear film rather than privacy film or blackout. The Police recommend laminated glass or security film for reachable windows, and 24:2022 when you replace the window. A film retrofit is not that replacement, and it does not apply a safety-glazing mark under Approved Document K. The [security window film buying guide](/hub/door-and-window-security/security-window-film/sub/security-window-film-buying-guide) sets out thickness, width, and what a test claim is worth.
Security window film sold for UK homes is a clear polyester sheet with a pressure-sensitive adhesive. It is meant to hold broken glass on the film.
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Personal buying guide
Question 1 of 2
How wide is the glass you want to cover?
BDF S4MC is about £66.51, rated 4.3 from 424 reviews, the highest stars here, and the only listing that names a test: ANSI Z97.1 Class B and CPSC Category 1. The brand field is Buydecorativefilm. The film is 4 mil clear PET, 100 micron in the highlight, made in South Korea, with 99% UV rejection stated, a scratch-resistant surface, and an interior soapy-water fit. It does not claim privacy or much heat control. The title size is 91 cm by 7.32 m. Another dimensions line says 30.48 m by 1.52 m, and the model and part number disagree. Most written reviews are American. They praise clarity when the fit is wet and careful, and they report bubbles, dimples, lines in the roll, and a job that needs two people. That US test is not a UK building-regulations pass. It is still the only named test in this basket, which is why this roll is the top pick.
Pros
Cons
Best for: You need a long, wide 4 mil roll and you want a US safety-glazing test written on the listing.
Less suitable: You need one small pane, a UK EN 12600 or EN 356 certificate, or a price near £12.
Specifications
Common questions
Does BDF meet a UK safety standard?
The listing says it passes ANSI Z97.1 Class B and CPSC Category 1. Those are US safety-glazing tests. The page does not state BS EN 12600 or BS EN 356.
Which size is the roll?
The title says 91 cm by 7.32 m. The item-dimensions line says 30.48 m by 1.52 m. The model is S4MCLST48100 and the part number is S4MCLST36025. Quote the title size and keep the conflict.
Are the reviews from the UK?
The 4.3 from 424 is the amazon.co.uk figure. Of the 50 reviews in the capture, 46 are from the United States and 2 from the United Kingdom.
AWKAQUN is about £29.99, rated 4.2 from 305 reviews, for a clear PET roll the title sizes at 76 cm by 5 m and the unit count at 3.8 m². That is the cheap way to cover several panes. UV protection is marked true, with no percentage. The bullets say self-adhesive, removable, and that fragments should not fly. They do not state a mil thickness or a British Standard. One UK reviewer says a BS EN 12600 claim had no proof. That standard is not in the captured bullets. Other reviews say the liner would not split, the sheet had no adhesive, it was too thin, it scratched, or it lifted after two days. Flat glass is the use that worked. A curved windscreen did not.
Pros
Cons
Best for: You have several flat panes and you will test the adhesive on one pane before you cut the roll up.
Less suitable: A curved screen, patterned glass, or any pane where a stated 4 mil or 8 mil thickness matters.
Specifications
Common questions
How long is the AWKAQUN roll?
The title says 76 cm by 5 m. The unit count is 3.8 square metres, which matches that. The item-dimensions line says 3 m by 0.76 m. Use the title and the unit count, and treat 3 m as a conflict.
Is it thick enough to hold glass?
The listing does not state a mil thickness. UK reviews call it very thin and, in some cases, say it would not stick. There is no BS EN 12600 line in the captured bullets.
Can it go on a car windscreen?
A UK review says it suits flat glass and will not conform to a curved windscreen. The listing asks about double glazing and does not answer.
DARUITE’s 30 × 200 cm roll is about £11.89, rated 4.0 from 1,935 reviews, the largest count in this set. The listing says 4 mil PET, clear, and that broken pieces stay together. Ultraviolet protection is marked false. The same reviews are on the wider DARUITE ASIN, and titles include blackout, privacy, and a heatwave odour, which does not match a clear security film. Reviewers often say it is easy, thin, and that the tools are hidden in the roll. Double glazing is asked and not answered. There is no British Standard on the page.
Pros
Cons
Best for: You want the narrow, widely reviewed 4 mil roll and you will not treat privacy comments as a shatter test.
Less suitable: You need UV control, a named safety class, or a sheet wider than 30 cm.
Specifications
Common questions
Does the DARUITE 30 cm film block UV?
The listing attribute says ultraviolet light protection is false. The page asks the question and the captured bullets do not give a percentage.
Is there a safety standard on the listing?
No BS EN 12600, BS EN 356, or ANSI line. A bullet says explosion-proof and shatter-proof without a test identifier.
Are the reviews about this clear film?
The 4.0 from 1,935 is the listing aggregate, shared with the 44.3 cm DARUITE roll. Several captured reviews are about privacy, blackout, or glare.
The wider DARUITE roll is 44.3 × 200 cm at about £15.69 and 280 g, still 4 mil PET, still UV marked false, still 4.0 from 1,935 reviews. Those reviews are the same set as the about £11.89 roll, with privacy, blackout, and a heat odour in the titles. The page asks about car windows and outdoor windows and does not answer. Fitting is water, a peeled backing, and a trim. Explosion-proof remains a bullet without a standard. Buy this width only if 30 cm is too narrow. You are not buying a different rating or a certificate.
Pros
Cons
Best for: The pane is between 30 cm and about 44 cm wide and you already accept the DARUITE review mix.
Less suitable: You only need 30 cm, you want UV control, or you want a standard named on the listing.
Specifications
Common questions
Can this DARUITE roll go on a car window?
The listing asks. The captured bullets do not answer. They describe water on clean glass and a trim.
Why is the price higher than the other DARUITE roll?
This one is 44.3 × 200 cm at about £15.69 and 280 g. The other is 30 × 200 cm at about £11.89 and 190 g. The star rating and the review text match.
Does it block UV?
The attribute says ultraviolet light protection is false, same as the narrower DARUITE roll.
The Mgood 30 × 200 cm roll is about £11.59 on amazon.co.uk, rated 4.0 from 467 reviews, and the listing calls it 4 mil PET that helps hold broken glass. The same reviews sit on the 44 cm Mgood ASIN, and many of them describe blinds, stripes, or blackout rather than a clear shatter film. Fitting is soapy water and a squeegee, with tools stated but not listed. Reviewers who got a folded pack report creases that would not leave, and a film that bubbled and lifted. The backing is often hard to start. There is no British Standard line on the listing.
Pros
Cons
Best for: You want a narrow 4 mil roll for one small, smooth pane and you can ignore privacy-style reviews.
Less suitable: You need a certificated safety pane, a wide sheet, or a film whose reviews are clearly about shatter hold.
Specifications
Common questions
How thick is the Mgood 30 cm film?
The listing says 4 mil, about 0.1 mm, in PET. It does not state BS EN 12600 or BS EN 356.
Does this roll include fitting tools?
The listing says installation tools are included. It does not name them. Reviews mention a cloth, a ruler, and a small knife, and some say those pieces were missing.
Will it block the view?
The title says clear security film. Many reviews on the shared 467-review pool describe privacy or blackout, so those comments are a poor guide to clarity.
This is the wider Mgood roll, about £13.59, with the size line at 44.3 × 200 cm and the title at 44 cm. Stars are 4.0 from 467, the same pool as the 30 cm roll, including privacy and blackout comments. The listing still says 4 mil PET, soapy water, a squeegee, and tools included. Weight is 272 g against 200 g on the narrow roll. UV and double glazing are asked and not answered. Removal is also asked and not answered in the bullets. No safety standard is named.
Pros
Cons
Best for: The pane is wider than 30 cm and you still want the cheaper Mgood 4 mil claim.
Less suitable: You need a review set that is clearly about this width, or a certificated film.
Specifications
Common questions
How wide is this Mgood roll?
The title says 44 × 200 cm. The size line says 44.3 × 200 cm. The item dimensions are 2 m by 0.44 m.
Does the listing answer the UV question?
The page asks whether it protects against UV. The captured bullets give no percentage and there is no ultraviolet attribute.
Are the 467 reviews only for this width?
The same 4.0 from 467, and the same review text, appear on the 30 cm Mgood ASIN. Many of those reviews describe privacy film.
Shackcom is about £13.99 for 44 × 300 cm, about 1.32 m², rated 3.8 from 1,157 reviews, with 50 UK reviews in the capture. That is the most film per pound among the mid-price 4 mil rolls, which is why it carries the best-value badge. The bullets say 4 mil, UV blocking without a percentage, children and pets, and one fitting tool. The material field says vinyl. Reviewers use it on greenhouse glass a dog jumps at, want two people, and report edges that peel until they are pressed again with shampoo. Sticky side and water amount are the repeated lessons. One reviewer says the glass will not shatter. That is not a test. There is no British Standard on the listing.
Pros
Cons
Best for: You need length for several small panes and you can live with a 3.8 score and the vinyl line.
Less suitable: You need a stated PET film, a named safety test, or a sheet wider than 44 cm.
Specifications
Common questions
Is the Shackcom film PET or vinyl?
The material attribute says vinyl. The bullets call it 4 mil safety film and do not say PET. The comparison keeps both lines.
Can it go on a car window?
The page asks, and the title says home, office, and car. The captured bullets do not say how to fit curved glass.
Does it include a tool?
The listing says one application tool comes with the roll. It does not name the tool.
Qualsen’s 4 mil roll is 30 × 200 cm at about £12.57, rated 3.8 from 52 reviews. The listing excludes rough and frosted glass, includes tools without naming them, and says the film is easy to remove. UV protection is marked no. A UK reviewer says it felt like 0.4 mil, not 4 mil, and another could not keep it on a glass table top because the edges rolled back. Other reviews report bubbles, a stiff sheet, and a weak bond on patterned glass. One buyer returned it after deciding it was not for double glazing. The listing asks that question and does not answer it. There is no safety-standard line.
Pros
Cons
Best for: You want a narrow clear roll for smooth glass and you can check the thickness when it arrives.
Less suitable: Frosted or patterned glass, a table top, or any job that needs a certificate.
Specifications
Common questions
Can this go on frosted glass?
The listing says it is not recommended for rough or frosted glass, and that it suits smooth, clean glass. A review on patterned glass reported a poor bond.
Is it really 4 mil?
The listing says 4 mil and 0.1 mm. One UK review says the sheet was 0.4 mil and too thin for their job. This comparison cannot measure the roll.
Does Qualsen claim UV protection here?
The ultraviolet attribute is No. Do not treat this 4 mil roll as a UV film.
Qualsen’s 8 mil roll is the only thicker film in this set, still only 30 × 200 cm, at about £19.98. The listing marks UV protection true without a percentage, includes unnamed tools, and bars rough or frosted glass. Banks, hotels, and sliding doors are named as places. There is no safety-class line. The amazon.co.uk rating is 3.4 from 5 reviews. The only captured review is from Germany and is a single positive sentence, so there is no UK fitting story and no complaint to quote. Weight is 270 g, against 200 g on the 4 mil Qualsen roll. You are paying for the 8 mil label and a short review list.
Pros
Cons
Best for: You specifically want an 8 mil label for a small smooth pane and you can accept five reviews.
Less suitable: You need width, a UK install record, or a certificate that 8 mil meets a class.
Specifications
Common questions
How much thicker is this than Qualsen 4 mil?
The listing says 8 mil and that this is increased compared with 4 mil. It does not give microns, and it does not show a BS EN 12600 or BS EN 356 class.
Can it go on a sliding door?
The listing asks, and the places list includes sliding doors. It does not add a separate limit. Rough and frosted glass are excluded.
What do the reviews say?
The listing is 3.4 from 5 reviews. The saved listing has one Germany review, which says stick it, cut it, and that the quality is good. It raises no fault.
Nine security window films are scored from the amazon.co.uk listings captured for this run. The score starts at the star rating times 12. It adds 14 only when the listing names a safety-glazing test, and adds 6 when captured United Kingdom texts discuss shatter film. It subtracts 14 for a shared review pool about blinds, mirror film, or blackout, subtracts 6 when fewer than five United Kingdom texts were captured, and subtracts 4 when thickness is missing or the size lines conflict. Scores are rounded to a whole number. This is not a laboratory test. The top pick is the only roll with a named test class. Best value is the roll with usable United Kingdom texts and a low price per stated square metre.
Amazon stars
45%The score starts at the amazon.co.uk star rating times 12. That is the base for every roll in this set, before the test line and the review texts move it.
Named safety test
20%Add 14 only when the listing itself names a safety-glazing test. A mil number, or a bullet that says shatter-proof without a class, does not get that addition.
Review texts
25%Add 6 when captured United Kingdom texts discuss shatter film. Subtract 14 when the texts are a shared pool about blinds, mirror film, or blackout. Subtract 6 when fewer than five United Kingdom texts were captured.
Thickness and size
10%Subtract 4 when thickness is missing or the size lines conflict. The 8 mil listing keeps any thickness credit inside the star maths, not as a separate bonus.
Use the table after you know the pane, not before. Thickness, a named test, and a width that covers the glass in one piece decide the roll. A word such as anti-shatter on the title does not. The scores on this page use amazon.co.uk stars, whether the listing names a safety-glazing test, what the captured reviews actually describe, and whether the thickness and the size lines agree. They are not a laboratory ranking, and they are not a PAS 24 certificate.
Security window film is a clear polyester sheet with a pressure-sensitive adhesive, sold to hold broken glass on the film. The Glass and Glazing Federation calls the product safety film when the filmed pane can be classed to BS EN 12600, and security film when it can be classed to BS EN 356 or BS EN 13541. GGF thickness excludes the adhesive. A mil number on an amazon.co.uk title is the seller’s claim until a certificate names the film and the glass. 4 mil is about 100 microns.
Mirror film and frosted film are privacy or solar products. Mgood and DARUITE share review pools that often describe blinds, privacy, or blackout. Those comments are a poor guide to a clear shatter sheet.
A mil number without a certificate is the seller’s claim. No roll here states BS EN 12600, BS EN 356, or PAS 24. ANSI Z97.1 Class B on BDF is a US safety-glazing test, not a UK building-regulations pass.
Fit wet, stop short of the frame, and cover the pane in one piece. Joints weaken the film. Do not film rough, frosted, wired, or cracked glass, and do not tuck the sheet under a sealed-unit edge. Glass under about 3 mm can crack while you fit it.
Thickness is the first number on these rolls, and a certificate is the number that matters. 4 mil is about 100 microns. 8 mil is about 200 microns. NPSA’s Class 2(B)2 film is at least 100 microns and certificated to that class. About 175 microns is the Class 1(B)1 note when blast curtains are omitted. A mil printed on an amazon.co.uk title, with no test named, is only the seller’s claim. In this set only BDF S4MC names a test: ANSI Z97.1 Class B and CPSC Category 1.
Buy adhesive polyester, not static cling, mirror film, or frosted film. GGF thickness excludes the adhesive. The sheet should cover the pane in one piece. Joints weaken it. Daylight film should stop about 1–3 mm short of the frame. Widths here run from 30 cm on Mgood, DARUITE, and Qualsen, to 44 cm on Mgood, DARUITE, and Shackcom, about 76 cm on AWKAQUN, and 91 cm on the BDF title. A 30 cm roll is often too narrow for a shop cabinet. Smooth float glass is the fit.
Three typical situations, each with a recommendation from this comparison.
You want fewer loose shards from a door or a low pane, and the glass is smooth. The Mgood 30 × 200 cm roll is about £11.59 and states 4 mil PET. The 4.0 from 467 reviews is shared with the wider Mgood roll, and many comments describe privacy film, so check that the sheet you receive is clear.
You need length for a greenhouse or more than one pane, and you can live with a 3.8 score. Shackcom is about £13.99 for 44 × 300 cm, with UK review text in the capture. Edges peel until they are pressed again, and the material field says vinyl while the bullets say 4 mil film.
You want the only named safety-glazing test in this basket. BDF S4MC states ANSI Z97.1 Class B and CPSC Category 1. It is about £66.51, 4 mil clear PET, and the title size is 91 cm × 7.32 m. That US test is not BS EN 12600 or BS EN 356, and the film does not replace a lock.
The top pick is the BDF S4MC. It is the only roll in this set that names a safety-glazing test, ANSI Z97.1 Class B and CPSC Category 1, at about £66.51. That is a US test, not BS EN 12600 or BS EN 356, and most written reviews in the capture are from the United States. Best value is the Shackcom 44 × 300 cm roll at about £13.99: usable United Kingdom review text and the generous area among the mid-price 4 mil listings. The material field says vinyl while the bullets say 4 mil film. AWKAQUN is cheaper per stated square metre, and it does not take that badge, because the listing states no mil thickness and reviews dispute the adhesive.
BDF S4MC 4 mil
Only named safety-glazing test in the set, ANSI Z97.1 Class B and CPSC Category 1, with the highest stars at 4.3 from 424.
Shackcom 4 mil roll
Usable United Kingdom review text and about 1.32 m² at about £13.99, the generous area among the mid-price 4 mil rolls.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources for glazing and window security, last checked on 21 October 2026. Shelf prices, stars, and review counts are from the amazon.co.uk listings in this category on that date.
Expert source (DIY & tools): Charlie White (Charlie DIYte) (external profile) – public expert commentary used as a research source, not as a contributor to our pages.
This article contains affiliate links to amazon.co.uk (tag pcuk26-21). If you buy through these links, we may earn a commission at no extra cost to you. Scores use the listings and the public UK sources named below. This is not a laboratory test, and it is not a promise of the cheapest price.
