Hi David,
You could try contacting the Handley Page Association which appears to operate on the internet from the Victor Association website.
The Victor Association | The Victor Association
There was a brief thread about the association a few years back:
http://www.pprune.org/aviation-histo...ge-victor.html
A letter to the local paper might elicit some information (better still, can you send them a picture of the Eagle in its heyday to jog some memories?). They have featured articles on Radlett in the past:
When aircraft took off from Radlett (From Watford Observer)
Good luck in your search.
Mechta