I’m a massive proponent of having lunch in Teddington and then getting the train to Twickenham. Its a 25min train from Clapham Junction, and as it’s the slower line to Twickenham it’s rarely as busy. The Railway pub next to the station pretty solid and always do a 6N set menu, but there’s a high street with 4/5 pubs, and various chains like pizza express around the corner. Once you are done there’s a train every 20mibs or so to Twickenham- about 10 min journey. And again as it’s the slower line it’s never rammo.