I had a new gun delivered last year from DAI Leisure https://www.daileisure.co.uk/ . Very good service
BSA R10 Mk2 .177 V Discovery Hi 4-16 x 44 SF IR
AA S510 .177 Konus 4-16x44 SF IR
Walther RM8 .22 Hawke 4-12 x 50 AO IR
One more for Range & Country in Sleaford, Good prices, website seems to have live stock monitoring and quick delivery.
Bought my ProSport from them, left handed item in stock and delivered to me within 4 days