Interserve is an agency so, do not expect anything more than what most agencies will provide.
There are several branches, I worked for the Nottingham branch, so this review will be based on that.
Training provided is basic and is not paid for but you will be expected to travel to attend.
Rates of pay are better than most agencies however, hours can be very unpredictable, such as 40+ hours one week, none the next.
the Nottingham branch is slow, it takes a long time for anything to process, it took almost 3 months from my application being processed to starting the training.
would recommend as a job for those not looking for full time work or just want to bulk up existing work.
hours unpredicatable, slow to get going