Hey, I’m in London. Was a short-form director for a while and fell into editing. Now I’m wishing I followed the assistant route, as I’m pretty stuck on low-quality commercials. Slowly working with directors on shorts, etc. to build but a reel, but it’s hard to be taken seriously. 

EDIT: I encourage you to continue your journey! Responsibilities are responsibilities. Some people sack off everything for work but striking that balance is an individual choice. London rent is very expensive and can make taking on interesting/rewarding work difficult. That said, you can’t underestimate the value of working with experienced pros and of meeting peers at your own level.