Welcome to the “Hotel California” world of SOTA activating Paul!
One of my best days of SOTA in recent years was doing the two IOW summits by public transport.
From your QTH in Kent, I’m guessing the likes of Detling Hill G/SE-013, Botley Hill G/SE-005, Crowborough G/SE-007, Leith Hill G/SE-002 and the string of South Downs summits - Wilmington Hill G/SE-011, Firle Beacon G/SE-010, Cliffe Hill G/SE-014, Ditchling Beacon G/SE-006, Chanctonbury Ring G/SE-009, Black Down G/SE-003, Butser Hill G/SE-004 - are next on your radar.
Have fun!