Hello I've had a problem with the rear brakes on my fl1, for some reason they seemed to stick, just put new shoes on and they're good now but the handbrake is not so good. I also have the TC, Hill decent and abs with the brake warning light on up on the dash, any ideas? Thanks!

The issue aren't connected.
The rear shoes need correct adjustment, or the handbrake will be poor. Also if the rear drums have done more than 100k miles, then they will be worn, and the handbrake will be less efficient than it can be.

The lights on mean there's a fault, which will need a diagnostic read to find the exact issue.