As a fellow brit who is all of those things other than jewish I can confirm not only is the demonisation getting worse but also it is infact getting worse for us in general . That said it's important to remember to preserve a sense of hope. The people who want us dead or worse are amongst the oldest and richest which makes them unfathomably powerful but more importantly not immortal, ultimately we will outlive them and it's up to us to make something of ourselves and the world left after they're gone.