Cordless Vacuum Cleaner (Herne Bay CT6)

PLEASE READ DESCRIPTION
This cordless vacuum by Greenote GSC50 is in great condition, but getting a replacement filter which it needs, is proving difficult.
This is the newer model, so a lot of the generic filters are aimed at the older model, which have a rim, so don't fit this newer model.
I have put photos of size and filter required
Could also be used as spare parts, as all in full working order.