Welcome Fellow UK Member!!!

This is a great forum with great resources to help you get started with your journey.
you say you hate exercise have you ever tried working out with a partner ? or found something that might be fun to do in a group setting? kettle bell classes or something similar?
As for a diet there's a lot of options out there but sometimes you've just gotta start with cutting calories or cutting back too much of a certain food just as a start, the slightest changes to your lifestyle at this moment in time can have big changes even if you just just cut 100 calories and add a few minuets of walking/jogging a few times a week, these are just a few ideas but there's so much you can do to enjoy exercise!
but yeah Welcome to the forum and Keep us updated on your progress.