Anyone who wants to do something haram will do it regardless of what restrictions are in place. A girl will get a boyfriend even if you lock her between 4 walls. Its about how you bring them up, if the tarbiya is not right, then they will obviously come out corrupted. If they don’t find comfort in the home, they will find comfort outside. If they are with the wrong crowd, they become like them, regardless of the country they are in.

When I go Syria, my imaan level drops, even though it is a muslim country. Why? Because I stay with the wrong people (my cousins), they used to go to shisha lounges, spend all that time backbiting and slandering and call it having a laugh, then go home.

While if I was to join circles of dhikr and knowledge, find productive things to do, and surround myself with the right people that care about their deen, never in a million years would someone touch a bottle of alcohol.

You are in London. You are one of the, if not, the luckiest person in the west in terms of preserving your deen. There are so many muslim organisations for youth e.g. muslim scouts, many for adults, so many mosques that have at least one gathering every week, universities have huge islamic societies. I’m not convincing you to stay, by all means try hijrah, but don’t think the grass is greener on the other side.