Things we're reading today include …
- Sir Mervyn King to bow out with a song on Desert Island Discs
- Debit sends cash tumbling
- 'Cash remains king in UK shops'
- Regulators clash over derivatives reforms
- Royal Mail banks in spotlight over Libor-rigging
- Paid for current accounts may be next scandal, watchdog warns
- Lloyds continues sale of private banks
- Digital cash arrests cause 'pain'