Studiospares went into liquidation. Gear4Music have subsequently picked up the brand, IP , assets etc. Offering a range of products from Studio spares own / proprietary brands. Maybe more to follow. But at present a far cry from the previous 'full range" offering of music / studio kit. Seems they picked it up for around £150k.
Nearest outfit to the old Studiospares is Canford Audio. But they operate only on a B2B basis.