Who gave Unite the authorisation to go to the press ?,
be very careful here, it looks very much like you are being used as a 'tester', if it all goes wrong, hey, only 600 members out of a union of thousands, NHS / Tescos etc, but if you get a 'deal', isn't this union fantastic.
No one in there right mind would try and negotiate a pay rise in this climate.
I have every sympathy with you, but wait untill the good times return, and the union....... idiots.