Just an update. I have been talking to Apple this evening and we went through a couple of steps;
1) Restart the IPhone
2) Run diagnostic checks
2) Backup IPhone and erase settings
None of these steps resolved the issue and I still have error warnings on my iPhone. Apple have processed an express replacement for my device which should be with me over the next few days. Once again Apple have stepped up, this is why I have owned an iPhone since 2007!