Corruption after map update

At a recent service my dealer updated the navigation map(s). 

We were out today and went to a saved destination about 3 miles from where we were. It took us an odd way. On thinking about it and checking we realised that instead of taking us to the "destination" Fordham in Suffolk the system was taking us to just outside Cardiff, over 200 miles away. Anyone else had corruption of their destinations after an update.  

I'll have to check my other destinations now. 

The destination was originally set using the save current position facility so definitely not an incorrect postcode entry. 

tom