Yeah, this is perfectly reasonable and chances are you can make more than this. If you're struggling with this amount, you either need to tell a better story that justifies your value or find better prospective clients. Remember, people aren't hiring a coder, they're hiring someone that can make their business better/make them money/put out a fire/something else that's valuable to them emotionally.

Also, is there a reason you don't move to London if your earning potential would increase there?

Btw, as an aside: PythonDeveloper if you see this, you're hellbanned.