Sue - presumably that won't help if GP has already sent prescription to Ll and they are sitting on it. Might try it for next time. I plan to complain to Healthwatch. Feel they may have more clout.
https://www.realtimetrains.co.uk/service/gb-nr:Y87590/2021-08-31 is reporting that the 8:08 ran today (tues 31) My understanding is that trains leave East Dulwich for London bridge at 07:23 07:53 08:08 08:23 08:53 09:08 09:23 09:53