The share-save scheme, in hindsight, was amazing. You could buy at a good discount. While I was there it traded between 380 and 425p. Last year it hit 4000p. Currently at 3200p. Unfortunately I couldn't make ends meet on my salary there (even opting out of the workplace pension scheme). I try not to dwell on it too much but I really did miss out on easy money.
If you worked at the HQ you were fortunate to have an on-site gym. For £5/m you could join the "Sports & Social" group for access (local gyms were £40+/m). The balance was spent on cinema trips and bowling... great get-to-know-your-department events.
Oh, did I mention they also have a Dwarf themed pub with £1 a pint staff nights?!