Yep...Go Cardless is the way for this one.
If I went Go Cardless, I would loose most of my cash payers (old lasses etc) Its also my takeaway money 
Hop in the TARDIS and come forward to the 21st Century Duncan.
And for goodness sake why on earth did you keep that moronic idiot customer for so long? 
95% pay online. No problems other than the odd reminder.
Only ever taken 1 cheque. Made it out to the wife. Not messing going to bank.
Go Cardless charge you. I aint paying no one
I need my cash customers, not much, just the odd £10 now and again