No voucher. There was a link in the text message to get a voucher via downloading a 'Swiipr' app. But having done that it told me that the claim code, which along with my name and booking reference was filled in automatically, wasn't valid. I could have hung around landside until some BA check in staff appeared to clarify what the situation was. But the only food landside was from vending machines and even WH Smith was shut, so I went airside as soon as I could in the hope of getting something to eat.