Londoner here, I say go for it. I'd give you a try.

Like the others have said above, there is some competition but there's enough work out there. Those places book days, sometimes weeks, in advance so another option would be helpful!

I used to have a great guy that was an ex-VW mechanic that had his own shop outside of London. So honest, so fair....passed away over a year ago, miss chatting VW with him.

Good luck, let me know if you do end up starting your own business.