Yep recall the famous 22 Loop by Hunters, was not the same feat achieved at a Plymouth Air Show that I seem to recall by the same team.
1956 was the year that 6 Hunters returning from a display ran out of fuel, couldn't make base due to adverse weather conditions, these 6 were Cat 5 but I do believe there were additional Hunters having the same problem but were subsequently salvaged.
The feat under the Tower Bridge was at first thought to have been a joke, I was at Wattisham at the time, can't recall whether he beat up WTM on the way back to Raynham though.