Danny
Questions spring up: what was the smaller building ? ILS Glide Path generator ? - no, that'd be at the other end of the runway from the Radar truck. CR(CA)/DF receiver ? - quite possibly. Someone will identify it for us. Fine figure of an LAC (?) - could it be you ? So what was stuck in the left side of your belt ?
Small building was Biggin's CR/DF base unit. The remote display was in the tower - relatively new at the time. No ILS at Biggin then.
LAC was not me. Photo is a blow-up from photo I took of Biggin's Modelling Club display/ competition as seen here: