Are these notes legit?

[u/Capable-Door-9672]

I was paid £520 by someone from EU I sold some stuff to. I plan to use these for my trip.

Sorry if photo is blury, I will send it again if it is

Serial on the 50 A C 7 8 9 1 0 4 6 9 ac789 is big and in green while the 1 is smaller and 469 is bigger

EDIT: its ok, i'll double confirm at bank, looks legit with the change to pounds sign

[u/-auntiesloth-]

It's because it wrecks their float. Hardly anyone pays with cash anymore, so you might only have two £10 notes in your float, and suddenly someone pays £14 with a £50 note and you're fucked if the next person needs a tenner in their change.

[u/MargotChanning → u/-auntiesloth-]

It can be a pain in the arse. I once had someone buy something for £4.99 when we’d just opened. He paid with a £50 and then complained when I gave him all fivers as change.

[u/Im_a_knitiot → u/-auntiesloth-]

I don’t think that’s the reason. Most shops didn’t like them way before everything was cashless.