Steve,
I don't have exact details, but I understand the Manchester, Birmingham, Cardiff and Belfast flights were supersonic "round the bay". The round the bay was essentially a trip out to 8w on the normal supersonic flight path, turning 70 miles around the tip of lands end, then decelerating back in down the English channel over Guernsey, where they then routed to the relevant airports.
Edinburgh was supersonic out over the north sea.