You obviously have never tried Pay As You Dine in any military establishment.
£2 gets a core meal or it did last time i had one!! 
Looking on the bright side it’s £40 a month in the pocket you wouldn’t have otherwise!
Recently I’ve been getting money off vouchers when filling at Moto services and they give 50p per 100 litres. You can only use them in their own cafes or Costa cafes, not used any yet so no idea if you could then buy a meal for £2. Might work with artic drivers with bigger tanks but I only drive a rigid so only get to about 250 litres when brimming a tank and a £1 voucher as a result.
If you are an AA member you get 20% in Moto service stations.
Radar19:
If you are an AA member you get 20% in Moto service stations.
Defence discount service offers this too 
A mate has an app on his phone for a fast food chain (McDonalds I think) which always has offers on it. All you need to do is show the offer to them with your phone. I cant get it for my phone though. Thanks Nokia 