Dean not wishing to confuse but since I set up a VPN (virtual private network) for added security it randomises your IP so it becomes more difficult for people to target you is how this seems to work.
When I log on to VPN it shows me what other users will see my IP address as and it is never my static IP address.
If I put in Jon's finder this is what it comes up with on VPN and I live in Devon so VPN doing it's thing..