Best Mattress Gap Filler Deals Online in the UK (10 Deals Found)

Last Updated - 15/09/2026 Sort By:

Best Choice
David & Amaya

New
David & Amaya High-Density Foam Mattress Extender – Sofa Bed Gap Filler, Rectangular Bolster Support Pillow, Armrest or
✔️ Seamless Sleep Solution: Enjoy uninterrupted rest with our premium foam bed gap filler. It effortlessly bridges the s

£16.99
Best Value
TokSay

New
TokSay 54" Double Size Bed Wedge Pillow for Headboard, Bed Gap Filler
Mattress Gap Filler: Are you still annoyed that the pillow falls under the bed because the gap is too big? Choose our sl

£28.99
TOPROUD

New
TOPROUD Headboard Wedge Pillow for Bed Gap, Foldable Mattress Gap Filler for Queen King Size, Multi-Functional Bed Crack
Fill Bed Gaps From 0–18cm: Designed To Fit The Gap Between Your Headboard And Mattress, This Foldable Bed Gap Filler Hel

£38.99
Monbaer

New
Custom Size Long Bed Gap Filler, Close the Gap Between Headboard Wall or Foot Board for Single/Double/King Bed, Rectangl
Bed Gap Filler - Thanks to high density sponge, the bed pillow has superior elasticity. The headboard pillow not easily

£14.99
RAINBOW

New
RAINBOW High Density Fo.am Gap Filler for Headboard, Sofa, Bed, Mattress Extender, Fo.am Pillar, Fo.am Cuboid, Fo.am Sti
Upholstery Foam Seamless Sleep Solution: Our bed gap filler effortlessly bridges the annoying space between mattresses,

£14.49
TokSay

New
TokSay 39" Single Size Bed Wedge Pillow for Headboard, Bed Gap Filler
Mattress Gap Filler: Are you still annoyed that the pillow falls under the bed because the gap is too big? Choose our sl

£25.99
Brillars

New
Brillars High Density Foam Bed Gap Filler for Mattress & Headboard – Sofa Bed Extender, Rectangle Bolster Support Pillow
1. Seamless Sleep Solution – Eliminate the uncomfortable gap between split mattresses with our high-density foam bed gap

£12.99
DriMelle

New
DriMelle Bed Bridge Twin to King Converter Kit, White Mattress Gap Filler
🔘【T-shape Bed Gap Filler】-- Bed Bridge: 200cm length x 20cm width x 8cm height (78.7 x 7.87 x 3.15 inch). Fixing Strap:

£27.99
Queens Land Home

New
Queens Land Home Foam Bed Gap Filler Wedge Pillow – Mattress Gap Cushion with Removable Washable Cover – Comfortable Sle
Support Posture: It helps improve posture by filling the space between the bed and body, which can be particularly usefu

£19.99
TokSay

New
TokSay 60" King Size Bed Wedge Pillow for Headboard, Bed Gap Filler
Mattress Gap Filler: Are you still annoyed that the pillow falls under the bed because the gap is too big? Choose our sl

£32.99

10 Mattress Gap Filler deals are available from: Amazon stores, starting from £12.99.
The biggest discount we found is 10%% on David & Amaya High-Density Foam Mattress Extender – Sofa Bed Gap Filler, Rectangular Bolster Support Pillow, Armrest or Headboard Cushion, Foam Only (Grey, 200x10x5cm) at Amazon.
The lowest price we found is £12.99 while the highest is £38.99.
Prices for the best Mattress Gap Filler deals average at £23.44.
Last updated on September 15, 2026.
We scanned these quality online stores and more to deliver you with the best offers online available for Mattress Gap Filler.