I have found myself having to be in London, near Heathrow airport, on a Friday afternoon when I am supposed to be spending the weekend in Snowdonia (near Beddgelert).So I can either travel home on the Friday night and drive over separately to join my family on the Saturday morning, else find a way of getting close to Beddgelert by train so I can be picked up. Before I embark on hours of internet research, I wondered if anyone had any ideas? Would be starting at Feltham station, going in to central London an option but not ideal. Thanks