Image at following link of rain shelter
http://ukga.com/images/content/image6026.JPG
Woodford Airfield Photos
Caption on the image
'In the 80's when they converted the Mk 2 Nimrod to Mk 3's they had a number of removed Mk 2 radomes not required.
I remember when i worked there that they used some on the golf course at the back of Woodford aerodrome as shelters - they are still there to this day!'