MissM, you come across as rather selfish by stating that £30+/month won't be noticed by you when it's quite clear it will impact on many.
Even if it doesn't affect how many t-shirts you can buy, the important principle is that your union didn't do its job.
To me that would be extremely important, given present circumstances.
Maybe I do but thinking on how much our salaries vary from one month to another it won't really make a difference. Most crew also got an increment this year.
This is where we are now. If crew have a problem with it they can always send their receipts and hope for a refund. Ask yourself this, how many do you think will do it? Not that many I'd say!