Silentnight Silentnight Anti-Allergy Ultimate Mattress Topper 1200
With an indulgent 12cm depth – our deepest design, this topper delivers exceptional cushioning and elevated comfort, helping to rejuvenate your mattress with a deeper layer of cosy support.
Designed for comfort from corner to corner, the generously filled quilted cover is enhanced with box-stitched edges and internal walls to keep the anti-allergy filling evenly distributed. This helps maintain lasting loft, edge-to-edge support and a consistently plump, supportive feel across the entire sleep surface.
Our advanced anti-allergy fibres are approved by the British Allergy Foundation, carrying the ultimate seal of approval for trusted protection against allergens. Fully machine washable at 40°C, it's designed to help keep your bed feeling fresher, cleaner and more hygienic for longer.
This product contains a biocidal ingredient with anti-bacterial properties that protects against fungal growth. The active ingredient is Dimethyloctadecy (3-(trimethoxysilyl)propyl) ammonium chloride.
As the UK's most trusted sleep brand, Silentnight brings over 75 years of expertise in creating premium sleep solutions designed to help everyone enjoy a deeper, more comfortable night's sleep.
- DEEPEST COMFORT, STRONGEST PROTECTION: A generous 12cm fill depth with a luxurious quilted cover delivers cloud-like cushioning while helping maintain a fresher, more hygienic sleep space.
- ULTIMATE CUSHIONED COMFORT: Rejuvenate your mattress with an indulgent layer of cushioned comfort. The quilted cover with internal walls keeps the anti-allergy filling evenly distributed, while box-edge stitching helps maintain plump, supportive comfort right to the edges for lasting support.
- SUPERIOR FRESH PROTECTION: Our superior anti-allergy fibres actively protect against dust mites, bacteria and odours, providing just-washed fresh comfort night after night.
- ANTI-ALLERGY GUARANTEE: Proud to be tested and approved by the British Allergy Foundation. Only this seal of approval guarantees true allergy-friendly bedding. Scientifically proven to remove allergens and 99.9% of bacteria - ideal for allergy and asthma sufferers, and those with sensitive skin.
- LUXURY FIBADOWNâ„¢ FIBRES: Crafted with luxurious down-like Fibadownâ„¢ fibres that are soft, bouncy and remain evenly distributed, keeping your topper feeling plush and plump, for dreamy comfort.
- SECURE FIT & EASY CARE: Elastic straps keep your topper securely in place for a no-slip fit. Fully machine washable with a 2-year manufacturer’s guarantee.
Delivery Options
Economy Delivery (UK) — £3.99 Delivered in 4–7 working days.
Standard Delivery (UK) — £4.99 Delivered in 2–4 working days.
Next Day Delivery (UK) — £7.99 Delivered the next working day on selected items. Terms & conditions apply.*
How Next Day Delivery Works
Upgrade your order to Next Day Delivery and receive your item(s) the next working day.
Orders placed by 9pm, Monday to Friday will arrive the next working day.
Scottish Highlands & Northern Ireland postcodes:
Orders placed between 9pm Friday and 2pm Sunday will be delivered on Tuesday if you live in the following areas: AB, BT, DD, EH, EX, FK, G, IV, IoM, KA, KY, ML, PA, PH, PL, TD, TR.
Remote postcodes (two working days): Our Next Day Delivery service takes two working days instead of one for the following postcodes: HS2, KW16–17, PA61–PA75, PA78, PH30, PH41–44, ZE2–3.
Ireland & The Channel Islands:
All orders to Ireland and the Channel Islands are eligible for standard delivery at a fixed fee of £7.95.
Channel Islands: Standard delivery in 3–4 days (£7.95), or Express delivery in 2 days (£9.50).
Republic of Ireland: Delivery within 7–10 days.
Unfortunately, Next Day Delivery is not available to Ireland or the Channel Islands.
Marketplace Items
The BrandAlley Marketplace allows our carefully selected partner sellers to offer you an additional range of products. Marketplace items are clearly labelled on the product page as 'Shipped from our partner'.
These sellers are responsible for managing your order, including shipping, delivery, and customer service.
Delivery timeframes and costs may vary by seller, you'll see the details clearly displayed at checkout before you place your order.
For any questions about your marketplace order, please contact the seller directly via your account.
Items available on pre-order means our suppliers send stock to our warehouse once you've placed your order. Because of this, delivery times can vary from sale to sale.
To see exactly when your item will arrive, please check the estimated delivery date (ETA) shown on the product page, in your basket, and at checkout.
If you order from more than one sale, we'll automatically split your order and ship items separately as they become available, so you receive each piece as soon as possible.
Delivery Options
Economy Delivery (UK) — £3.99 Delivered within 4–7 working days of our warehouse receiving your item from the supplier.
Standard Delivery (UK) — £4.99 Delivered within 2–4 working days of our warehouse receiving your item from the supplier.
Delivery Options
Economy Delivery (UK) — £3.99 Delivered in 4–7 working days.
Standard Delivery (UK) — £4.99 Delivered in 2–4 working days.
Next Day Delivery (UK) — £7.99 Delivered the next working day on selected items. Terms & conditions apply.*
How Next Day Delivery Works
Upgrade your order to Next Day Delivery and receive your item(s) the next working day.
Orders placed by 9pm, Monday to Friday will arrive the next working day.
Scottish Highlands & Northern Ireland postcodes:
Orders placed between 9pm Friday and 2pm Sunday will be delivered on Tuesday if you live in the following areas: AB, BT, DD, EH, EX, FK, G, IV, IoM, KA, KY, ML, PA, PH, PL, TD, TR.
Remote postcodes (two working days): Our Next Day Delivery service takes two working days instead of one for the following postcodes: HS2, KW16–17, PA61–PA75, PA78, PH30, PH41–44, ZE2–3.
Ireland & The Channel Islands:
All orders to Ireland and the Channel Islands are eligible for standard delivery at a fixed fee of £7.95.
Channel Islands: Standard delivery in 3–4 days (£7.95), or Express delivery in 2 days (£9.50).
Republic of Ireland: Delivery within 7–10 days.
Unfortunately, Next Day Delivery is not available to Ireland or the Channel Islands.
