30/10/1995 - LU F3s Ze733 & ZE210 collided during night IMC NVG work up.
There was also the case of 2 GR1s which met nose to nose going opposite directions at night. I remember it because of a photo of a piece of metal about the size of a plate which they couldn't initially identify. It turned out to be a coin one of the crew had had in his pocket. I think it was the first of the two below, can remember the second but not if it was night IMC. Led to the introduction of ALFENS to deconflict night low level sorties.
9/8/1988 - ZA593 & ZA329, collided near Milburn, Cumbria.
14/8/1990 - ZA464 & ZA545, collided east of Spurn Head.
Also a couple of Javelin night collisions
here:
15/9/1959 - XH775 & XA 662, collided during night intercept near Brundall, Norfolk.
26/10/1961 - Javelin XH906 & Canberra WD995, collided during night intercept north of Akrotiri.