HTC One M7 :: Displaying Incorrect Location Info

Basically the town where I live (lets call it Town A) is about 20 mins away from the town where I work (Town B). When i'm at work, everything seems to be fine. My phone recognises my correct location & the town name displays correctly on the clock/weather widget on my home screen, Google maps etc.

However, the problems start when I drive home to "Town A" at the end of the day. For some reason when I get home, my phone is still convinced that i'm back near my place of work. The clock/weather widget displays the name of Town B where I work rather than Town A where I live.

When i'm at home & I open Google Maps to see a visual representation of where my phone thinks I am, it shows me near to, but not exactly at, my place of work. If I click the "My Location" icon, it will sometimes update & show my correct position at home. As a result the clock/weather widget then updates to show the correct town name. However, within a few minutes it updates again & reverts back to displaying the town name for where I work.

Interestingly i know that there is a cell phone mast about half a mile away from the location near to my work that Google Maps incorrectly pinpoints me at when at home, so it appears the phone is trying to triangulate my position from phone mast locations? Despite the fact that i have location mode set to high accuracy, so it should be using mast locations, WiFi and GPS to pinpoint my accurate position?

Bizarrely, this is the only time the location functions play up. All other times it seems to work correctly.