I worked at organic chemistry department. Experience was really good, a lot of seminars, opportunities to present your work. Staff is very friendly. Amazing NMR facility. Teaching opportunities.
Cons
MS heavily outdated. Even though it is a top institution, the pay is the same as around the UK - low for research staff compared to other countries. Other positions are paid quite well with good benefits.
Plenty of short-term FTCs available for graduates to undertake alongside coursework.
Cons
Administrative processes across most departments are decentralised and often disorganised. Employees frequently need to proactively monitor and follow up on required paperwork and payment processing.