Harrison Spinks Heaven 21500 Medium King Size Mattress
Harrison Spinks

Harrison Spinks Heaven 21500 Medium King Size Mattress

The Harrison Spinks Heaven 21500 is a pocket spring mattress in a medium firmness, available in UK Single, Double, King and Super King, plus an EU Single.

  • Minimises partner disturbance
  • Medium feel for side & back sleepers
  • From a long-established British maker

£2,605.25

Size: King Size. Available at Mattress Man

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Where can I buy the Harrison Spinks Heaven 21500 Medium King Size Mattress?

Below are the best prices for the Harrison Spinks Heaven 21500 Medium Mattress in a King Size. Available from (9) trusted retailers.

Harrison Spinks Heaven 21500 Medium Mattress

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£1999.00
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Prices last checked:
11th November 2026

Mattress dimensions for the Harrison Spinks Heaven 21500 Medium 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 Harrison Spinks Heaven 21500 Medium King Size Mattress

Mattress

Harrison Spinks Heaven 21500 Medium Mattress

Size

UK King (5ft x 6ft 6in)

Firmness

Medium

Construction

  • Pocket Spring

Depth (cm)

Layers

Layer Details

Key benefits

Key Benefits of the Harrison Spinks Heaven 21500 Medium King Size Mattress

  • 75cm each for two sharing: Two people sharing get 75cm of width apiece, enough to change position without negotiating over territory in the middle of the night.
  • Springs plus space equals less disturbance: Pocket springs compress individually, which means a partner getting up for an early shift is less likely to wake you, and the UK king's width helps further.
  • Extra length for taller sleepers: At 200cm long, the UK king is 10cm longer than the UK double, a genuine relief if one of you is approaching six foot.
  • Room for a bed-sharing dog: If the dog treats the bed as its own, the UK king absorbs that intrusion far better than a smaller size would.
  • Fits most master bedrooms: We suggest a room of at least 2.7m x 2.9m, which most UK master bedrooms can manage once wardrobes are accounted for.

Who should buy the Harrison Spinks Heaven 21500 Medium King Size Mattress?

This size suits you if...

You share the bed every night and want more personal space than a double allows, one of you gets up hours before the other and you'd rather not feel it, or one of you is tall enough that a 190cm mattress leaves feet hanging off the end. It also suits couples whose dog has quietly claimed a corner of the mattress as its own.

Consider another size if...

Your bedroom falls short of the 2.7m x 2.9m we suggest for a UK king. In that case we'd recommend the UK double instead, which needs at least 2.6m x 2.8m and still sleeps two comfortably.

FAQ's

Frequently Asked Questions About the UK King

How big is the Harrison Spinks Heaven 21500 in a UK king?

It measures 150 x 200cm, or 5ft x 6ft 6in. Two people sharing get 75cm of width each, and the 200cm length gives taller sleepers a little more room than the 190cm found on smaller UK sizes.

Is the Heaven 21500 UK king good for couples?

Yes, and it's the size most couples end up shopping for. The pocket springs move independently, so a partner turning over or leaving early for work causes less disturbance, and 75cm of width each means you're less likely to be lying close enough to feel it anyway.

What room size do I need for the Heaven 21500 in a UK king?

We suggest a room of at least 2.7m x 2.9m, with 3.2m x 3.2m feeling comfortable. Measure with wardrobes and drawers in place, as new build masters in particular can shrink quickly once furniture goes in. If your room is smaller, the UK double needs at least 2.6m x 2.8m.

Should I choose the UK king or UK super king Heaven 21500?

The UK king is 30cm narrower than the UK super king, and both are the same 200cm length. If your room meets the 3m x 2.9m we suggest for the UK super king and you want maximum space, size up. Otherwise the UK king gives couples plenty without dominating the room.

Is a UK king long enough for someone over six foot?

At 200cm, the UK king suits most people up to around 6ft 6in, and it's 10cm longer than the UK double. Sizing up to the UK super king adds width but no length, so if length is your concern, the UK king already gives you the maximum this mattress offers.