I went for this last year. DEC . As none rated ( Airbus) and expired boeing rating i was asked to provide €40000 . Its less if B777 or 747/800 .
The £830/ month for expenses is a maximum, and has to be claimed for each night away on layover.
Your contract is with UK Crewing . The " client " is NLH. The contract is issued under Singapore Law.
Max 10 days off per month is not really attractive to a family man, so I didn't join.
I know NLH guys can spend half their time positioning in economy on their own airline just to save a few ID dollars.
Enjoy .