Kingsize Bed 6months old, VGC silent night matress ?

6 month old Kingsize bed, grey fabric headboard and kick board, wooden slat base paid 300. Very good matress silent night miracoil 7 cirrus airflow no need to turn it and anti roll together, rrp 450. This has had one person sleeping in it for 6 months, having to sell due to down sizing, fabulous comfy bed. Pick up only from SW3. i still have the boxes for the base, will be fully dismantled. Cash on collection. 400 ono.