"Martin Rowley" m wrote :
1800 SSW F2-3 25km - 1/CB T295D152
RMK: 1Cb cal top, very distant to N: somewhere over the Chilterns I should
think, also, trCu hum (local Cumulus has evaporated rapidly past
hour)~065, 1Ac (some signs of instability)~120, 2Ci~350+. Total cloud
cover: 2 oktas.

Assuming that was the same one I saw, Martin, it was even further away,
eventually spawning some showers across Cambridgeshire, roughly
between St Neots and March, though they seem to have slipped through
the NCM network.

Philip