They say people will cancel their DD as part of DPUK. But some will cancel their DD because if they don't and it bounces they incur a charge, but the media will probably market this as 'thousands of bizarre far right antivaxxers sign up for DPUK and cancel their DD Illegally!!"
www.dailymail.co.uk/money/bills/article-11070049/What-Dont-Pay-UK-happens-cancel-energy-bill-payment.html