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Best combined smoke and CO alarm UK

Updated: 21 October 2026

You want one combination alarm from the eight amazon.co.uk listings kept in this set, and the bestseller row is not the same thing as a standard printed on the page. The best combined smoke and CO alarm UK, on the 19 October 2026 capture, is the FireAngel SCB10-R when you want a Kitemark, both EN numbers and a sealed cell, and you can live with its green standby flash. A later shelf price can move while these scores stay tied to that capture. The method and the full table are on the [smoke and CO detector comparison](/hub/fire-protection/smoke-and-co-detector). A qualifying purchase can earn a commission at no extra cost to you.

You want one combination alarm from the eight amazon.co.uk listings kept in this set, and the bestseller row is not the same thing as a standard printed on the page.

Our top picks

AEGISLINK AEGISLINK SC200

Best overall

AEGISLINK AEGISLINK SC200
7.7/10about £23.19
View offer
X-Sense X-Sense SC07

Alternative

X-Sense X-Sense SC07
8.6/10about £27.71
View offer
FireAngel FireAngel SCB10-R

Rank 3

FireAngel FireAngel SCB10-R
9.0/10about £29.99
View offer
On this page
  1. 1.What best means here
  2. 2.Top pick: FireAngel SCB10-R
  3. 3.If you want a screen: X-Sense SC07
  4. 4.Best value: AEGISLINK SC200
  5. 5.Who should skip the rest

What best means here

The score is 0–100, and it is not a laboratory test. The FireAngel SCB10-R scores 90 and is the top pick. The X-Sense SC07 scores 86. The AEGISLINK SC200 scores 77 and is best value on price, which is not a standards award. Which? included the SCB10-R in a July 2025 carbon monoxide article, and that is not this site’s score. How to read a listing before you trust stars is the buying guide.

Top pick: FireAngel SCB10-R

The FireAngel SCB10-R is about £29.99 with 4.4 from 1,372 reviews. The listing states a Kitemark and BSI approval to EN 14604:2005+AC:2008 and EN 50291-1:2018, on a sealed cell. It is the only card in this set that prints both EN numbers, a Kitemark and a sealed cell together. Skip it for a dark bedroom. A bright green flash about every 40 seconds led reviewers to take units down. Safelincs lists it as unsuitable for a kitchen or a garage. The warranty is 3 years, not 10.
AEGISLINK AEGISLINK SC200

Testsieger

AEGISLINK AEGISLINK SC200
7.7/10about £23.19
View offer

If you want a screen: X-Sense SC07

The X-Sense SC07, ASIN B083W5HCG6, is about £27.71 with 4.6 from 2,885 reviews. It claims a sealed 10-year lithium cell, photoelectric and electrochemical sensors, and both EN 14604 and EN 50291. The LCD shows carbon monoxide in ppm. It does not work with the SBS50 hub, and there is no Kitemark in the capture. One unit manufactured on 18 March 2021 expired on 11 September 2026 with no low-battery warning, about five years. Choose it when you want a ppm screen and you accept a claimed EN line rather than a Kitemark you can see.

Who should skip the rest

The Kitire packs do not print EN 14604 or EN 50291. The 4-pack at about £33.29 has 4.6 from 11 reviews and no interlink. Do not buy four uncertified discs as a substitute for the FireAngel plus a proper carbon monoxide point. If the room split is the real problem, combined versus separate alarms is the next read.

Common questions

What is the top pick in this comparison, and why?
The FireAngel SCB10-R is the top pick because it scores 90 on this site’s listing method: a Kitemark, EN 14604 and EN 50291-1, and a sealed cell, at about £29.99 with 4.4 from 1,372 reviews on 19 October 2026. It is also number 1 in the combination-detector rank in that capture. The score is not a laboratory smoke or gas test. Skip it if a green flash about every 40 seconds would sit in a bedroom.
Who should leave the FireAngel because of the green flash?
Anyone fitting the FireAngel SCB10-R where they sleep with the light off. Reviewers call the standby flash, about every 40 seconds, too bright for a bedroom or a campervan, and some removed the unit. The flash is normal standby, not an end-of-life chirp. If you need darkness, look at a model whose reviews do not centre on that LED, and still check the standards.
Is the X-Sense SC07 the better alarm if you want a display?
It is the better fit in this set when you want carbon monoxide in ppm on a sealed standalone disc. It is about £27.71 with 4.6 from 2,885 reviews, and it names EN 14604 and EN 50291 without a Kitemark in the capture. Dated reviews include expiry around five years, one of them with no warning chirp. It will not join an SBS50 hub. Use it for the screen, not as a stricter standards pick than the FireAngel.
Why is the AEGISLINK best value if it has no EN numbers?
Because the best-value mark in this method is the price part, not the standards part. At about £23.19 and 4.6 from 3,147 reviews it is the cheapest kept combo with a large sample, so it scores 77 and takes that award once. The listing prints no EN 14604 or EN 50291 line. Treat it as a low price with a screen and a replaceable cell, and look elsewhere if you need the numbers on the page.
Should I buy the XP0A-MR for phone alerts?
Only if you already have an X-Sense SBS50. The base station is required, it is not in the box, and the alarm is about £35.99 with 4.6 from 91 reviews and no EN number. Reviewers like a voice that names the room. They also report steam alarms, Wi-Fi drops and a carbon monoxide reading stuck at 0. A phone alert does not count as interlinked smoke and heat alarms.

Related pages

Landlord rules for smoke and CO

Smoke and CO detector

Buying a smoke and carbon monoxide alarm in the UK

Where to fit a combined smoke and CO alarm in the UK

When a combined vs separate smoke and CO alarm fits

Sources

Public UK sources from the research digest, last checked on 19 October 2026. Prices, stars, and review counts are the amazon.co.uk lines captured that day.

  1. GOV.UK — Smoke and Carbon Monoxide Alarm (England) Regulations, landlord booklet (retrieved 19 October 2026)
  2. Approved Document B, volume 1, dwellings (retrieved 19 October 2026)
  3. Approved Document J circular, 2022 (retrieved 19 October 2026)
  4. Scottish Government — fire and smoke alarms in Scottish homes (retrieved 19 October 2026)
  5. Department for Communities — Northern Ireland private-tenancy alarms, 2024 (retrieved 19 October 2026)
  6. NHS — carbon monoxide poisoning (retrieved 19 October 2026)
  7. FireAngel SCB10 datasheet (retrieved 19 October 2026)