I am also in the UK and am finally on TC5-RC8
I had the update arrive ota this morning but I accidentally pressed the back button which canceled the update
I managed to get the update by creating an "any cut" shortcut to device info, then selecting check for updates. Couple minutes after that i then had the update ready message again, making sure this time to not press back!
First impressions are good! Best bit being that internet speeds have gone from averaging around 400 to averaging around 1100!