Am I being overpaid???

Hi,

So I’ve started doing bank shifts after a year away, and I’ve just looked at how much I’ve been paid I’ve realised that I’ve been earned £15.53 / hour (+ unsocial hours enhancements where I’ve worked unsocial hours). Since I’ve been back I’ve been uplifted to band 3. But surely this is too high? All I can find on my emails mentioning pay rates is a document sent to me in July 2023 that states hourly rates for Band 3 as 13.70 and 14.94 from 1st September 2023. Presumably rates will have gone up since then but I can’t find any information and I’m worried I’ve been overpaid and will have to give the money back!!

If anyone could provide any insight that would be helpful

Thank you

EDIT:

Okay so I’ve managed to get access to my ESR to actually view my payslips, and the extra pay has been put down as ‘WTD’. I believe this is what bank staff are paid in lieu of not having AL? So I think that explains it and I don’t think I owe any money (which is good… because I am a student and skint)