Highgrove Ottawa Pocket 1000 King Size Mattress in a Box
The Highgrove Ottawa Pocket 1000 Mattress in a Box has individually sleeved pocket springs under a fibre and foam top, which means a medium to firm feel with less of your partner's movement reaching you.
- Medium-firm feel for back sleepers
- Minimises partner disturbance
- Hypo-allergenic fibre filling
£301.18
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.
Highgrove Ottawa Pocket 1000 Mattress in a Box
More available sizes
Mattress details
Mattress
Highgrove Ottawa Pocket 1000 Mattress in a Box
Size
Firmness
Medium Firm
Construction
Foam
Pocket Spring
Rolled
Depth (cm)
29
Layers
4
Layer Details
Pocket springs
Springs housed in their own cloth sleeves, smaller in diameter than open coils and independent of their neighbours. That means they respond separately, which cuts the movement you feel from a partner.
High-density advanced comfort foam
A high-density foam that works with the springs to give a medium to firm support. It adds body-contouring without making the mattress feel soft.
White fibre comfort layers
Generous white fibre layers, described as hypo-allergenic. They add a cushioned surface feel and may suit you if you're sensitive to fillings.
Advanced reflex foam
A deep layer of advanced reflex foam beneath the white fibre. It adds a supportive base to the comfort layers above.
Layer details from archerssleepcentre.co.uk product page, October 2026.
Key benefits
- More room each than a double: You each get 75cm of width, 7.5cm more than a UK double, which means fewer elbows and less negotiating over the middle.
- Quieter nights for split schedules: The springs move independently, so if one of you gets up hours before the other, the sleeper left behind should feel less of it.
- Length for taller partners: At 200cm long, the UK king is 10cm longer than a UK double, which means a partner over six foot is less likely to have feet over the end.
- Space to shift position: The wider surface leaves room for extra pillows during pregnancy or recovery without pushing your partner towards the edge.
- Supportive feel across the whole bed: It's rated medium firm, with foam and fibre over the springs, so both sides get support with a little cushioning on top.
This size suits you if...
You share the bed every night and a UK double has started to feel cramped, one of you is over six foot and keeps running out of length, or you go to bed at different times and want less disturbance when the other moves.
Consider another size if...
Your bedroom is smaller than our suggested 2.7m x 2.9m once wardrobes are in. We'd recommend the UK double instead, which needs at least 2.6m x 2.8m.
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
How much space does each person get on a Highgrove Ottawa Pocket 1000 UK king?
Two people sharing get 75cm each. That's 7.5cm more per person than the UK double, which gives 67.5cm each, and 15cm less per person than the UK super king, which gives 90cm each.
Is the UK king Highgrove Ottawa long enough for someone over 6ft?
The UK king is 200cm long, which is 10cm more than the UK double, the UK small double and the UK single. If one of you is approaching or over six foot, that extra length is often the bigger reason to upgrade than the width.
What size room do I need for a UK king Highgrove Ottawa Pocket 1000?
We suggest allowing at least 2.7m x 2.9m, and 3.2m x 3.2m is more comfortable if you want bedside tables and space to walk round. New build master bedrooms can feel smaller once fitted wardrobes are in, so measure the finished space rather than the floor plan.
Should I get the Highgrove Ottawa in a UK king or UK super king?
The UK super king is 30cm wider and gives 15cm more per person, at the same length. It needs at least 3m x 2.9m, though. If your room falls short of that, the UK king still gives couples more personal space than a double.
What size bedding fits a UK king Highgrove Ottawa mattress?
Use king size sheets for the 150 x 200cm mattress, which is 5ft x 6ft 6in. A 230 x 220cm king duvet fits. The mattress is 29cm deep, so check that any fitted sheet you buy has deep enough pockets.