It's increasing all the time esp as it's been in the press about the demise of cheques recently,
I would say 1 in 3 customers pay by card now, mostly as I push it quite a bit now, and to be honest anyone who can pay by cheque can normally use a debit card, you just have to remind them about it,
What is good is that it's the bigger payments that are normally by card, which is often a bit risky by cheque but very welcome by card as you know straight away that it's gone through, plus people do often opt to have a bit more done knowing they don't have to have the cash on them,
Regards
Steve