Enjoy your new life over there in UK
Expect significant differences. Do whatever you can to keep busy and minimise potential homesick feelings.
I'd suggest reviewing and securing a passing certificate for life in UK before you get tied up with any new employment.
Also, if you don't have B1 level English test then consider that too.
There are plenty of forum threads on other important things to set up during your first few weeks in UK. Please take time to search for them and review.