Pros
They have great clients which potentially you'll get a chance to work with although not guaranteed work on a Taxi Rank service so you can't pick the client although you can make contacts with account managers. Trainers are mixed some absolutely great will stay later or answer emails after 5pm. There are no other discernible benefits to speak of.
Cons
So many I'll have to list; No technical training or information provided other than some SQL writing, make sure your ability to research information yourself is strong and you go to the right places online (Don't start onsite and ask what a test environment is won't go down well). In addition the development life cycle they teach you is incorrect and a serious issue management should address, FDM confuse the Design and Build in IT development life cycle with the development part of a project. Start to Finish is the development life cycle in projects FDM should not tell trainees that Development is Design and Build. this is basic IT knowledge very poor indeed. Terms and Conditions pretty basic to non-existent. Salary is low especially for expensive cities getting placed in London is a curse and a blessing. On site I did report to the account manager that I was left by my line manager to do my own devices and although I started well I could use some training and advice, nothing was done until a senior manager escalated myself, even then the line manager, account manager and HR Rep did nothing outside of two unhelpful tele conferences . Before leaving FDM it would be nice if HR actually sat you all down in a teaching room and got you logged onto various different systems with over complicated passwords you regularly have to change and signed you in rather than give you some poxy piece of paper with contact details (I've had to be geo-flexible a few times and I no longer have FDMs little sheet of paper so can't really contact them anymore even though I need to). HR also have no easy how to guides with Screen Shots and circle what you should be clicking where for various pieces of information hey want off you when you're not hard to draw up and FDM isn't always that clear. Trainers bad points some are out of the building by 5pm and those trainers are often the ones in just before 9. We had one trainer leave the class every day at 1pm nothing was done by FDM and still received a bill for £2,500 excel training bit of a joke really. Now I'm on client site the only indication I have I'm an FDM employee is the poor salary. The Culture and Value thing seems to be lip service and company branding.