Without the self assessment reminders this year to submit and pay, many taxpayers are wondering left how to pay. Unless they have internet access they are unable to pay, as they do not have paying in slips for use at the post office or bank. Looking at HMRC website there is no indication that tax can be paid over the telephone.
I have just telephoned HMRC agent helpline and although HMRC do accept payment over the telephone, the person agreed that she could not find it on the HMRC "Pay your self assessment tax bill".
For those in the same position having to fend off frustrated clients, the number is 0300 200 3402.
I have seen this issue discussioned on a British Telecom landline users' forum. It is a huge issue HMRC needs to consider for all those many people only with landlines and no mobile phone. Apparently many people have a BT service which blocks unknown callers and certain other kinds of callers (to protect the vulnerable) so people have disable the BT call bar for every number blocked/all calls, then wait for the BT landline call with the code and after getting the code then reinstate their BT settings for call barring!
Also I thought due to changes in the law on card providers and card fees HMRC were not accepting card payments anymore and people had to do bank transfers instead but that might be wrong (otherwise they will have a much bigger bill than now from card providers).