As far as I am aware:
Atlantic Airlines run a cadetship, you work in Operations for a while alongside your theoretical training, after gaining your licence you are rated on one of their fleets and bonded for about 5 years.
Highland Airways also run their cadetship in a pretty much identical fashion to Atlantic.
Aeros Flight Training run (or did run) a slightly different scheme. Same principle, Operations work during training (PPL with ATPL theory distance learning + hour building) then full time CPL/IR training. An MCC is not part of the package so you will have to fund that yourself, however at the end of your training you are bond free.
Apart from these rumours of a BA sponsorship programme being on the cards that is pretty much it for the UK.