Problems with Siri and Apple Maps

In the last two days both my wife and I have a problem with Siri and Apple Maps. When I ask Siri to "give me directions to Home", it takes me to the right house number and road name, but not at my location. It's only 4 miles away but nevertheless wrong. I've checked the "Home" address in Contacts and that is correct. The address Maps takes me to is not in my address book. It only happens with Siri as the "Home" icon on Maps has the right address. My phone is running IOS 17.1.

Bizarrely the same this happens with my wife's iPhone and hers is running IOS 16.7.2

I've never had this problem before yesterday with Siri always giving me correct directions to home until yesterday.

Have contacted Apple Support today and spoken to two people who changed a few things on my phone but I still get the same result.

It would seem to possibly be a problem with Siri