I don't know anything about the incident apart from what I've read here. What was the risk to the public? ie Actual risk, not fanciful risk
..... up to a point
Heliport. But surely you (in particular!) should recognise that the Thames at Tower Bridge is - and was in 1968 - part of the London Helilanes. And (IIRC) in them days that part of the lanes had a
maximum height of 700' agl....... could have ruined yer whole day ....
One was a fresh-faced trainee at the time, but ISTR the buzz was (and I haven't yet read the linked article) that Pollock was protesting that there wasn't a Royal (or any other) flypast in London to mark the RAF's 50th birthday ....
The very airframe was in Bahrein in 70/71 (8 or 208 Sqn), and was identified by a dayglo Tower Bridge zap!