Merry Christmas everyone! 
Monzo now have a team working on cheque imaging support for the app, but unless they are going to surprise us with the gift of a sudden Christmas Day launch (unlikely, although they do seem close), you won’t be able to pay a cheque in with your phone using Monzo this year. However, most other banks now offer this feature, so I have compiled the list below with credit to crowdsourced updates from here and FintechForum, in case anybody stumbles across this thread after receiving a cheque as a gift.
If you’ve received a cheque for Christmas, then the following information might be useful:
Banks supporting cheque imaging in-app include:
£10,000 limit per cheque
Lloyds, Bank of Scotland & Halifax
£5,000 limit per cheque
Coutts
£2000 limit per cheque
HSBC
First Direct
£1,000 limit per cheque
Barclays
NatWest, RBS, Ulster Bank, NatWest International & Isle of Man Bank
Virgin Money
Starling
£500 limit per cheque
Santander
TSB
Banks not yet offering support:
Monzo (planned , postal deposit is available)
Nationwide (post is recommended instead)
Metro Bank (deposit in-branch only , it may be possible to post to their Head Office )
Co-operative Bank & Smile (post is recommended instead or you can use the Post Office )
Handelsbanken (deposits can be made by post or at the Post Office)
Triodos (deposit via post only)
Chase (no support for cash or cheques at all)
Kroo (no support for cash or cheques at all)
Revolut (no support for cash or cheques at all)
Danske Bank (deposits can be made at the Post Office)
Bank of Ireland (deposits can be made at the Post Office)
AIB (deposits can be made at the Post Office)