twinkle *hugs*
I'm sorry to hear your fresh start isn't what you hoped it would be. What do you want/need to do to make you feel comfortable and safe? If it is going back to Scotland, then do it. If it is staying in London but moving out of this situation, then what can be done to make that happen? Spend some time thinking about what twinkle needs and plan to make that happen. Focus, back on you. Right now, I think it's o.k to be a little selfish and do what is totally best for YOU.
As for your A, meh, he'll be the same whether you're finding your happy place or not. Less about him.. more about twinkle huh?
I'm not sure what part of London you are in, but is there an Al-anon meeting near you? I know you're nursing a broken foot (and getting around London on public transport is fraught at the best of times, let alone on crutches), but maybe a phone call to one of the meetings attendees might get you a lift to it (?).
*hugs*
Tx