Hi,
Currently switching my old account to Monzo,will all my benefit payments transfer no problem(UC and ADP)?
And do I have to inform them of change of bank account .Thanks!
It’s worth updating them directly just in case.
That’s part of CASS - it’s done automatically, as part of the FP or BACS spec (I assume). I’ve seen the payee bank details change before my eyes in the Starling app when I’ve paid somebody who has switched via CASS.
Many thanks! your help is appreciated. 
Good question. I think they say your payments will transfer over without any issues for 3 years, but when it comes to money being paid into your account I would definitely ring benefits/employers to update your bank details. You never know when systems might go down 