Where are you customers? I'd go there. I'd also consider if you want to accept payments, wether it's going to be EUR or GBP, that could be another layer of unn

Where are you customers? I'd go there. I'd also consider if you want to accept payments, wether it's going to be EUR or GBP, that could be another layer of unnecessary complexity at the beginning. For taxes I think Ireland (or Switzerland) are the best places. For startup community and social life I'd go to Berlin or Barcelona.