TNF has done it again: even though Barry Ekins name is on the car it looks like Barry Collerson driving the ex Tomlinson chassis as described by Dick Willis, George Murray's Weberised BMC A engined Austin 7 Special then Jim Larkin in the Jag Ford. Jim Larkin I was told by Barry Lake raced on a shoestring traded the Jag Ford on a hire purchase Lotus 20 had 3 jobs to fund it and when he crashed it at I think Warwick Farm was rushed to hospital with quite serious injuries telling Barry who went with him in the ambulance to go back and locate his expensive driving shoes torn off in the accident. The Barry Collerson cars included F3 Cooper in Europe and as KB says Large Tablet in Oz
Jock Mclean's heart attack occurred in the GMurray car, Jock Mclean's son has posted here. Perhaps that was your source re whereabouts, Dick?
Pity the poor Historian ! Trying to sort out the driver of the MG, glad you John and KB could identify Barry Collerson.