It's going to make it much easier for the government to regulate it, now that it has a classification. I personally don't think that it's going to give Bitcoin a boost in internetional markets since this is basically exclusive to the UK, however there are definitely some good things that can come out of this. UK Bitcoin gambling is probably going to start getting regulated though, so that might have an affect with the local value. It could definitely be a step in the right direction however.
I agree it won't make much difference to the world's Bitcoin market, as the UK is leaving the EU. Any Bitcoin regulation introduced in the UK won't be introduced in Europe. It would affect the world Bitcoin market if the whole of Europe was regulating it, as Europe is huge.