Okay I'll concede you the point - it's a Landar R6 of 1965
Thanks Woodinsight.
The 1000C and the R6 are in fact one and the same car.
I have a publicity sheet from Landar in which they say "Meet us on Stand 46 (at the Racing Car Show at Olympia, London in January 1966) to see the fantastic Landar 1000C Sports Racing Car". The photo used on it is actually the same one posted by Amsterdam and captioned Landar R6...
In fact when the car appeared at that show it
was described in the catalogue as the Type R6.
It was the first car produced by Clive and Peter Randall (look at the surname backwards!).
They went on to produce the R7 (a slightly modified R6) and the R5 (go figure the nomenclature of that one!) and a number of Formula Vee cars.
I'll post the Landar publicity sheet on Monday (my scanner at home isn't working properly).