The headboard & footboard have brackets that are pre-attached to them. There are 8 bolts which will need to be loosened, Once they are loose, you can hook the side rails in and then tighten the bolt.
eBay
100% Waterproof Mattress Covers Protector Adjustable Bed Fitted Sheets With Elastic Band Single Double King Size 140/160/180x200
Aliexpress UK
Designed to combine elegance, practicality, and unbeatable comfort, this bed set is the perfect centrepiece for any modern or classic bedroom décor. Upholstered in rich, high-quality plush velvet, the divan base adds a touch of opulence to your bedroom.
eBay
Cotton Fitted Sheet with Elastic Bands Non Slip Adjustable Mattress Covers for Single Double King Queen Bed 140/160/180/200cm
Aliexpress UK
ECASA Aria Gold Console Table With Clear Glass Top Gold & Silver. This stylish and functional bed is the perfect addition to any bedroom. The bed features a luxurious leather headboard with built-in Bluetooth speaker and LED lights that can be customised to display a variety of colours.
eBay
1pc Fitted Sheet with Elastic Bands Non Slip Adjustable Mattress Cover for Double King Queen Bed
Aliexpress UK
Available Sizes: 4ft6 Double & King Size. Takes standard UK mattress size: 4ft6 Double: W135cm x L190cm. 5ft King size. Takes standard UK mattress size : 5ft King Size: W150cm x L200cm. With its sleek, contemporary design, it’s the perfect solution for storage.
eBay
WOSTAR 360° fully enclosed with zipper mattress protector cover couple/child 150x190cm single double bed sheet protection pad
Aliexpress UK
3ft single, 4ft small double, 4ft6 double. 4FT6 double: length - 2030mm x width - 1450mm x headboard height - 870mm. Black, brown, white or grey faux leather Ottoman bed only or choose a mattress option.
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Tatami Floor Mat/Pad Fashion Comfy Futon For Dorm/Home Nap Thickened Single Double Use Sleeping Mattress/Foldable Plush Bed
Aliexpress UK
LUNA Faux Leather Ottoman Bed Collection. Experience luxurious comfort and style with theLUNA Faux Leather Ottoman Bed Collection. These beds are designed to provide both modern aesthetics and practical functionality.
eBay
360° fully enclosed with zipper mattress protector cover student baby single double bed sheet protection pad 90/150cm
Aliexpress UK
By providing a comfortable and supportive surface for sleep, a quality bed can improve sleep quality, reduce aches and pains, and contribute to overall health @livingcomfortbedz. UK BED FURNITURE. Durability: Our outstanding furnishings are built to last, with sturdy construction employing durable materials.
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Luxury 800TC Egyptian Cotton Fitted Sheet with Elastic Band High End Mattress Cover for Single Double Queen King Size Bedsheet
Aliexpress UK
High quality Ottoman storage luxury bed foot end opening This Ottoman Storage Bed is a great addition to any bedroom. It comes in a sleek grey colour and is made of wood with an upholstered finish. The bed is compatible with king, small double, single, and double mattress sizes, and includes a medium firmness orthopaedic mattress that is hypoallergenic and easy to care for. Assembly is required, but no additional parts are needed. The footboard height is between 40-60 cm, and the bed is 75 cm high. It's a perfect fit for any bedroom and is sure to impress.
eBay
Double Bed Frame 135x190 cm Solid Pine Wood - No Mattress Included
Aliexpress UK