Silentnight UltraGel 3000 Pocket Soft King Size Mattress
Silentnight

Silentnight UltraGel 3000 Pocket Soft King Size Mattress

The Silentnight UltraGel 3000 Pocket Soft is a hybrid mattress, which means it pairs pocket springs with a comfort layer for a mix of support and cushioning.

  • Genuinely soft pocket-sprung feel
  • Extra give at shoulders & hips
  • Also available in a firm version

£931.36

Size: King Size. Available at Archers Sleepcentre

Best priced retailer
Get the lowest price we've found
Buy at Archers Sleepcentre
Buy direct from Silentnight
We may earn a commission.

Save with the previous model

Some retailers still sell the earlier version of this mattress for less than the current model's best price.

Where can I buy the Silentnight UltraGel 3000 Pocket Soft King Size Mattress?

Below are the best prices for the Silentnight UltraGel 3000 Pocket Soft Mattress in a King Size. Available from (9) trusted retailers.

Silentnight UltraGel 3000 Pocket Soft Mattress

Cheapest
Retailer
Was price
£1999.00
Save £250
Get deal
Prices last checked:
11th November 2026

Mattress dimensions for the Silentnight UltraGel 3000 Pocket Soft King Size Mattress

Length: 200cm

Width: 150cm

(5ft x 6ft 6in)

Minimum room size: 2.7m x 2.9m

Mattress details

Mattress Details for the Silentnight UltraGel 3000 Pocket Soft King Size Mattress

Mattress

Silentnight UltraGel 3000 Pocket Soft Mattress

Size

UK King (5ft x 6ft 6in)

Firmness

Soft

Construction

  • Pocket Spring

  • Hybrid

  • Gel

Depth (cm)

Layers

Layer Details

Key benefits

Key Benefits of the Silentnight UltraGel 3000 Pocket Soft King Size Mattress

  • More room each: Each of you gets 75cm of width, which means 7.5cm more than on a UK double and a little more distance from a partner who shifts about in the night.
  • Length for a tall partner: The UK king is 10cm longer than the UK double, so someone over six foot can stretch out fully rather than sleeping with their feet at the edge.
  • Easier for split schedules: If one of you gets up hours before the other, the extra width gives the early riser more room to slip out without crossing into the other person's side.
  • Soft comfort for two side sleepers: A soft hybrid lets shoulders and hips sink in slightly, and the UK king gives two side sleepers enough width to curl up without knees and elbows meeting.
  • Fits more bedrooms than a super king: We suggest at least 2.7m x 2.9m for the UK king, compared with 3m x 2.9m for the UK super king, so it suits many main bedrooms.

Who should buy the Silentnight UltraGel 3000 Pocket Soft King Size Mattress?

This size suits you if...

You share the bed every night and feel squeezed on a UK double, or one of you is tall and you both prefer a soft, cushioned surface that lets you sink in on your side.

Consider another size if...

Your bedroom is smaller than our suggested 2.7m x 2.9m. We'd recommend the UK double instead, for which we suggest at least 2.6m x 2.8m.

FAQ's

Frequently Asked Questions About the UK King

Is the Silentnight UltraGel 3000 Pocket Soft UK king long enough for someone over 6ft?

At 200cm, the UK king is 10cm longer than the UK double, which gives a tall sleeper more room to lie straight without their feet reaching the end. If you're well over six foot, measure yourself lying down and compare with the 200cm length before buying.

How much space does each person get on a UK king Silentnight UltraGel 3000 Soft?

Two people sharing get 75cm each on the UK king. That is 7.5cm more each than the UK double, and 15cm less each than the UK super king, which gives 90cm per person.

Should we choose the UK king or UK super king in the UltraGel 3000 Pocket Soft?

The UK super king gives you 90cm each against 75cm on the UK king, and the two sizes are the same length. The trade-off is floor space: we suggest at least 3m x 2.9m for the UK super king and 2.7m x 2.9m for the UK king.

Is a soft king size mattress a good idea if my partner is much heavier than me?

A soft mattress tends to suit lighter sleepers, and heavier bodies can sink too far and wake with lower back ache. On a shared UK king that difference matters, so if your weights are very different, the Firm version of the UltraGel 3000 Pocket may suit you both better.

Is the UltraGel 3000 Soft in a UK king good for sharing during pregnancy?

The soft feel gives a little extra cushioning for side sleeping, which many people rely on later in pregnancy. The UK king's 75cm each also leaves more room for a support pillow and for changing position during the night without crowding your partner.