Been Screwfix for 3 years. Pay for supervisor is just above that of a staff member despite having keys to the store and being in charge in the managers absence, sometime even when they are there. Manager and assistant mangers spend ungodly amount of time in the office and leave supervisors to run the store. Hours are ok but don't do overtine becuase you'll never get extra pay or even a thank you. Upper management and area managers don't seem to care if youre happy in your job as long as they are hitting targets.
Breaks and holiday are ok
Bad pay, everything else