King size Memory Foam Mattress (N5 Highbury)

UK King size memory foam mattress - Only about 15 months old, and had a topper on it, so is in good condition.
(It was too low for me at the time due to a hip op)
Slight defect, as I tried to move it myself, I grabbed the underside, so there is a slight tear in it, see photos (easily repaired with a few stiches). It is a firm mattress.
Has to be gone by this weekend as it is blocking my corridor (ground floor)