Thanks to paul178 for reminding me about the ‘whocallsme’ site. They’ve had about 150 complaints about this number, over a period of about two months or so. Some responders have mentioned that the caller has their address details, apparently from the electoral roll, and several have received abuse when they’ve questioned how the caller has obtained their number. One responder has tracked the origin to Narainghar, a village near Ambala in north-west India. I have been registered with the Telephone Preference Service for years, but I’ve lodged a complaint with the Information Commissioner’s Office (ico.org.uk) since, unlike TPS, they will investigate even if the caller’s name is unknown.

Will be interesting to discover if other forum members get calls from the same source in the near future. The full number they’re using is 01734 533443, by the way.