Harrison Spinks Luxury Essential 750 Pocket King Size Mattress
The Harrison Spinks Luxury Essential 750 Pocket Mattress is a medium-feel pocket spring mattress with 750 Cortec Quad springs, which means individual support rather than the whole surface moving when you do.
- Cover free of chemical treatments
- Medium feel suits most sleepers
- Glue-free, welded spring unit
£649
Get the lowest price we've found
Save with the previous model
Some retailers still sell the earlier version of this mattress for less than the current model's best price.
Harrison Spinks Luxury Essential 750 Pocket Mattress
More available sizes
Mattress details
Mattress
Harrison Spinks Luxury Essential 750 Pocket Mattress
Size
Firmness
Medium
Construction
Pocket Spring
Wool
Eco-Friendly
Depth (cm)
24
Layers
3
Layer Details
Cover
A FabriSafe cover made from wool yarn and viscose fabric, which is naturally fire retardant with zero chemical treatments. That means it meets safety standards without sprayed-on chemicals near your skin.
Comfort Layer
Traceable British wool paired with recycled polyester fibres for cushioning. Wool helps regulate temperature, so it works across warmer and cooler nights.
Support System
750 Cortec Quad steel pocket springs, each in its own fabric pocket, welded together ultrasonically and completely glue-free. Individual pockets mean the springs respond to your shape rather than moving as one block.
Layer details from mattressonline.co.uk product page, September 2026.
Key benefits
- Real space for two: At 150 x 200cm you get 75cm each for two people sharing, which means fewer accidental elbows and less negotiating over the middle.
- Springs that keep movement local: Each of the 750 Cortec Quad springs sits in its own pocket, so one of you getting up early disturbs the other far less across this wider surface.
- Length for taller sleepers: The UK king is 10cm longer than the UK Double at 200cm, which stops anyone approaching six foot pressing feet against the footboard.
- Wool across a bigger bed: The traceable British wool filling helps regulate temperature, useful when two bodies share one mattress and run at different heats through the night.
- Natural build at an accessible price: The glue-free, chemically untreated construction is unusual at this end of the market, and the UK king brings it to couples without a luxury outlay.
This size suits you if...
You share the bed every night and a double has started to feel cramped, one of you gets up hours before the other and you want their movement to stay on their side, or someone in the bed is tall enough that the 10cm of extra length over a UK double is the real draw.
Consider another size if...
Your bedroom falls short of our suggested 2.7m x 2.9m minimum, or you sleep alone. We'd recommend the UK double instead; it needs a smaller room, at least 2.6m x 2.8m by our guidance.
Similar Mattresses in This Price Range
Did you know? On Mattress Unboxed we have over 1,000 different mattresses to suit all types of sleepers. View all mattresses.
FAQ's
Is a UK king big enough for a couple on different schedules?
Yes, and this mattress suits that situation well. With 75cm each for two people sharing, plus 750 individually pocketed springs that flex under one person without dragging the surface with them, an early alarm on one side is much easier to sleep through on the other.
Will the UK king fit in a new build master bedroom?
Usually, but measure first. New build masters often feel smaller once wardrobes go in, and we suggest at least 2.7m x 2.9m for a UK king so you can open doors and walk round both sides. If your room is tighter, the UK double needs at least 2.6m x 2.8m.
Is the Harrison Spinks Luxury Essential 750 in a UK king long enough for someone over six foot?
At 200cm long it gives a person over six foot genuine clearance, and the UK king is 10cm longer than the UK Double as well as 15cm wider. If length is your main reason for upgrading, note that the UK Super King is the same length, so you'd be paying for width you may not need.
Should we choose the UK king or the UK super king for this mattress?
The UK Super King is 30cm wider than the UK king but the same length, and we suggest at least 3m x 2.9m of room for it. If a dog routinely claims a corner of the bed, or you simply want maximum space, size up; otherwise the UK king suits most couples and most rooms.
Where can I buy the Harrison Spinks Luxury Essential 750 in a UK king?
Compare the retailers listed on this page; the prices shown here are updated as retailers change them. Stock a UK king often outlasts less common sizes because it is one of the most widely made UK sizes, but availability still shifts, so the live table is the reliable place to check.