Apologies, I have no idea of how to adhere to WGS84 standard. An example is welcome! Anyway, it seems the first strip you mention is the one I was referring to. If it is any help, it can be found on a map by surfing to (for just one example)
www.openstreetmap.org/#map=16/51.84841111/-0.007460
I could not manage to find the strip N/E of Puckeridge, would you have coordinates (in whatever notation)? Any info on either aerodrome most welcome.
@CGB: yes, that is it indeed. Thanks. I found it at ukga.com, too, though with precious little information. Of the other one, N/E of Puckeridge, not a trace to be found.