10 Best Bunk Bed Mattresses 2025 in the UK

The Wilson Beds Single Mattress is a good fit for bunk beds, thanks to its standard 3ft single UK size, which ensures it will fit most bunk bed frames comfortably. The 6.5 inch depth is suitable for bunk beds, providing adequate support without being too thick, which is important for safety and space.

The mattress combines memory foam and continuous coil springs, offering a balanced medium soft to soft feel that can be comfortable for children, who often sleep in bunk beds. The memory foam may provide good contouring and support, while the springs add durability and bounce. The mattress is delivered roll-packed and boxed, making it easy to maneuver and set up in tighter spaces, which is often the case with bunk beds in smaller rooms.

The medium soft to soft firmness might not be ideal for everyone, particularly adults who prefer a firmer support. Additionally, while the Cooltouch technology is a nice feature for temperature regulation, the mattress being only 16.5 cm thick might not provide the high level of comfort and support found in thicker mattresses. Still, for the price and its specific bunk-bed suitability, this mattress is a solid choice for children’s rooms.

The Extreme Comfort Flame Essentials Mattress is designed as a single, foam-free option ideal for bunk beds, kids beds, and guest rooms. With its 3ft size, it fits comfortably in compact spaces like lofts and spare rooms. The 18-centimeter thickness offers a plush and comfortable feel, thanks to its unique coil spring system which provides a softer surface ideal for children and lightweight adults.

The Cooltouch Plus sleep surface is a standout feature, offering a breathable and luxurious sleeping experience that helps regulate temperature during the night. This can be particularly beneficial in warm climates or for individuals who tend to sleep hot. Constructed with seven layers of polyester, cotton, and recycled fibers, the mattress is hypoallergenic and fire-retardant, adhering to UK fire safety standards. These qualities make it a safe and healthy choice for young sleepers.

Moreover, its convenience factor is amplified by its vacuum-packed and rolled delivery, simplifying setup and transport. However, the plush firmness may not suit everyone, particularly those who prefer a firmer mattress for back support or heavier individuals who require more robust support. Additionally, while it offers a luxurious feel, the absence of memory foam or latex might not offer the contouring support some users seek. Its single size and lightweight design make it less suitable for couples or larger individuals. Perfect for its budget-friendly value, the mattress could be a great choice for those seeking comfort and simplicity in a bunk-bed setting or temporary sleeping arrangement.

The Starlight Beds Cooltouch Hybrid Single Mattress is designed to fit standard single beds, measuring 90cm by 190cm and 18cm thick, making it a suitable choice for bunk beds. Its hybrid construction combines traditional coil springs with a memory foam layer, providing a balance of firm support and plush comfort. This design helps relieve pressure points while maintaining durability, which is important for everyday use in bunk beds. The mattress is covered in a breathable Cooltouch fabric, adding to comfort by helping regulate temperature throughout the night.

Featuring seven layers including cotton and polyester, it offers a soft sleeping surface while supporting up to 100 kilograms. One notable strength is its affordability, making it a solid option for those looking for value without sacrificing quality. It is manufactured in the UK and meets safety standards, adding peace of mind. The mattress is on the thinner side at 18cm, so if you prefer a very thick or extra plush mattress, it might feel a bit firm or less cushioned. Additionally, the memory foam portion is only about 5% of the fill, so it won't provide the deep contouring feel that some memory foam mattresses offer.

The mattress comes vacuum-sealed for easy delivery and requires no assembly, which is convenient. This mattress suits anyone needing a comfortable, budget-friendly option that fits standard bunk beds, especially if you prefer a slightly firm but plush sleeping surface and value easy care and safety compliance.