I am being very nice and calling it a nuisance - a series of similar numbers keep calling every so often but dont even bother to leave a message or anything; it can range potentially e.g. from a charity or something of the sort to a scam call (or worse may be?)

Here we go….my turn to be called from this unrecognised number. Thanks to others who have confirmed my suspicions about the call. No message left and one of several calls with the 03 prefix to my landline.

Suspect number, very close to previous calls from similarly prefixed numbers which have been reported as scams on this website. Call received and no message recorded. Interesting to see if others report unsolicited calls from this number.