BT Advanced Cordless Home Phone with 100 Percent Nuisance Call Blocking and Answering Machine, Single Handset Pack: Amazon.co.uk: Electronics & Photo
BT 4600 Big Button Advanced Call Blocker Single Phone | Curvissa
CPR V5000 Call Blocker for Landline Phones – Stop All Unwanted Nuisance Calls at a Touch of a Button - Works With Your Existing Home Phone : Amazon.co.uk: Electronics & Photo
Amplicomms 1502 Phone and Additional Handset - AmplifiedTelephones.co.uk