This is not meant as discrimination or bitching or whatever,
But its the same with Ryanair LTN base crew the majority are eastern europeans.
The only thing i can say from the aviation gossip is that it is very difficult for eastern europeans to get flying jobs in there part of the world (no offence guys). So they are prepared to PAY for training uniform ect to get a job as crew. (Ryanair do this easy employment and cost saving)
Many Brit guys I know would not pay Ryanair or the contractors to train thenm, then work for a contractor/Ryanair.