No deposit no fuel

On my way to work this morning & went to my local Morrisons petrol station (Milton Keynes).

Stood by the pump waiting for it to be cleared when one of the staff approached me & informed me that motorcyclists now have to put a £5 pound deposit down before they will let them fill up.

I asked if this was the same for car drivers or were they just persecuting bikes & yes just bikes. Took my business elsewhere. Is this a common policy for Morrisons? Rgds Tony Hales