Pros
Good benefits: fair pay, pension, private health care, overtime pay, good Christmas party and gifts. Most colleagues are friendly. Open door policy with management. Friendly working atmosphere. Job security as the company is doing well and they only promote internally.
Cons
The work is very repetitive and as such it gets boring quickly and graduates soon leave. The "friendship" groups among colleagues are cliquey. As there is a high turnover rate, there are always new faces so if you're lucky to arrive at the same time as others, then you're in with a chance to fit into a group. The area the company is based is also dead from a social point of view and very expensive. Gerrards Cross is among the top ten most expensive places in the UK! So unless you have a car or already have somewhere to live, then there might be issues finding somewhere both affordable and adequate. They also look down on you being late - even by 5 minutes - and you're strongly encouraged to stay longer afterwards to make up for any lateness. But leaving early even if you arrive early isn't allowed.