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Best bottle gully for the hole you have

Updated: 23 October 2026

Star order will hand you the wrong part. The highest line in this set is 4.5 from 23 on a DN70 roof gully, and that listing is not a pot under a downpipe shoe. Best bottle gully, on this page, means the kept amazon.co.uk listing that matches one hole: a shoe, a wall inlet, a shallow invert, or a flat roof. The four prices sit on the [rain gully comparison](/hub/diy-supplies/rain-gully). Prices are the saved amazon.co.uk figures and they move. A qualifying purchase can earn a commission at no extra cost to you. The Products Compared editorial team compared the listings and the saved review notes. There is no lab test and no kitemark check. Updated 22 October 2026.

Star order will hand you the wrong part. The highest line in this set is 4.5 from 23 on a DN70 roof gully, and that listing is not a pot under a downpipe shoe.

Our top picks

UK Plastics UK Plastics single-inlet bottle gully

Best overall

UK Plastics UK Plastics single-inlet bottle gully
9.0/10about £12.47
View offer
n/a Horizontal bottle gully 305 x 155 mm

Best value

n/a Horizontal bottle gully 305 x 155 mm
7.3/10about £33.44
View offer
UK Plastics UK Plastics back-inlet bottle gully

Alternative

UK Plastics UK Plastics back-inlet bottle gully
7.0/10about £12.99
View offer
On this page
  1. 1.Under a downpipe shoe
  2. 2.Piped in at the wall
  3. 3.When the bottle is too tall
  4. 4.On a flat roof

Under a downpipe shoe

If the downpipe ends in a shoe, the match is UK Plastics B08YKJ44RP at £12.47, 4.4 from 48 reviews. The outlet is 110 mm plain ended, it is roddable, and the grid diameter is not printed. One UK buyer returned it over the diameters. Another said they were correct. Hold it against the pipe before you dig. Skip it for a back inlet, a shallow body, or a named standard. £12.47 is the lowest price in this set, not the cheapest 110 mm gully in Britain. FloPlast D510 was £21.68 excluding VAT on a merchant page, and Osma 4D900 was £42.99, ASIN B07L7W15LY. Neither is a row here. The checks are on the rain gully buying guide.

Piped in at the wall

When the pipe enters at the wall, the match is UK Plastics B08YNXYSN1 at £12.99, plain ended at 110 mm, with a 180 mm circular grid. The line is 4.3 from 17. That 180 mm is the grid, not the outlet. Skip it if a shoe already drops onto an open grate. One UK review priced a blanking plug at about £5, and the bullets do not list one. FloPlast’s own back inlet says remove the plug, not drill the pot. That is not proof this box contains a plug.
UK Plastics UK Plastics single-inlet bottle gully

Testsieger

UK Plastics UK Plastics single-inlet bottle gully
9.0/10about £12.47
View offer

When the bottle is too tall

A tall bottle that cannot reach the drain is the wrong bargain. B0120PT0I0 at £33.44 is 305 × 155 mm, with a 110 mm horizontal outlet, rings stated for 80–125 mm, a stated 400 L/min, and an odour-sealing dry flap. The line is 4.3 from 22 reviews. Two UK texts say a normal bottle would not fit a shallow foundation or drain. The seller’s K3 and 300 kg is not a driveway. Rodding is not stated, and the brand field is empty. It is the best value in this set only when a tall pot cannot reach the invert. Skip it when the £12.47 bottle already fits, and skip it under a car.

On a flat roof

The 4.5-star listing is Uzman-Versand B0DGGLK2K1, Dachablauf DN70, at £43.36. Use it only on a balcony, carport, garage roof or flat roof. It is hard PVC with a leaf catcher, 470 g, listed at 32 × 32 × 25 cm, between the substrate and the sheet. It is not a 110 mm yard bottle. The review texts are from Germany, Belgium and France. A leaf catcher is not a second outlet if a parapet grate blocks. Skip this ASIN for a yard or a shoe. Leave all four if you need BS 4660 on the page, a plug in the contents, a vehicle-rated cover, or a roof sized with BS EN 12056-3. Those are merchant or designer jobs.

Common questions

Which listing is for a shoe over a grid?
UK Plastics B08YKJ44RP, the single-inlet bottle gully at £12.47, 4.4 from 48. Water is meant to fall through the circular grid. The outlet is 110 mm plain ended. Check the diameters yourself: one saved UK review returned it, and another said the size was correct. It is the shoe listing in this set, not a back inlet and not a roof drain.
Which listing prints a 180 mm grid?
UK Plastics B08YNXYSN1, the back-inlet gully at £12.99. The 180 mm figure is the circular grid in the bullets. The outlet is still 110 mm, and the listing also says 4 inch, the trade name for that nominal size. Do not order it because you want an 180 mm pipe.
Which one is for a drain that is too shallow?
B0120PT0I0 at £33.44, the 305 × 155 mm horizontal body. Two UK reviews say a normal bottle would not fit a shallow drain or shallow foundations. It includes a dry flap and rings stated for 80–125 mm. The seller’s 400 L/min and K3 / 300 kg lines are not a lab report, and the cover is not for a car.
Why is the 4.5-star listing not the yard winner?
Because it is a DN70 flat-roof gully, not a yard bottle, and the review texts behind the 4.5 from 23 are not from the UK. Sorting by stars puts a roof outlet under a downpipe shoe. Use it only on a deck that needs a flange and a leaf catcher, and still give a parapet roof a second outlet or a visible overflow.
Should I buy an Osma gully instead?
Osma 4D900 was £42.99 on amazon.co.uk, 4.6 from 10, ASIN B07L7W15LY, and it is not in this comparison. A FloPlast D510 on a merchant page was £21.68 excluding VAT, with a standard named there. Buy a named part when you need that paperwork. The £12.47 listing can still go under a shoe if you accept the missing standard and you check the diameters.
Is the £12.47 gully the best value if one buyer returned it?
It is the lowest price in this set, with the largest review count, and the diameter is still disputed. One return against a buyer who said the size was correct means you dry-fit it. The best-value case for a different hole is the £33.44 horizontal body, when a tall pot cannot reach a shallow invert. Paying £12.47 twice is the expensive route.

Related pages

Bottle or back inlet

Rain gully for a flat roof

Rain gully

How to choose a bottle gully: size, inlet and trap

How to install a bottle gully so the grid stays flush

Sources

Public UK sources and the amazon.co.uk listings compared on this page. Scoring method dated 22 October 2026. Updated 23 October 2026.

  1. Approved Document H (England), 2015 (retrieved 22 October 2026)
  2. Scottish Technical Handbook 3.6 (retrieved 22 October 2026)
  3. FloPlast underground drainage (retrieved 22 October 2026)
  4. FloPlast underground drainage FAQs (retrieved 22 October 2026)
  5. Harmer roof brochure (retrieved 22 October 2026)
  6. Northern Ireland roof drainage (retrieved 22 October 2026)
  7. Brett Martin rainwater FAQ (retrieved 22 October 2026)
  8. NHBC Standards 2025, chapter 5.3 (retrieved 22 October 2026)