The MGA was first produced in 1955 and this looks like the 1600 model which was introduced in 1959. The prototype of this car was the EX182 which raced at the Le Mans 24 Hour race in June 1955, and the MGA was introduced on 26 September 1955 at the Frankfurt Motor Show. I remember seeing motoring journalist and BBC commentator John Bolster drive what I thought at the time was one of the EX182 cars into the paddock at the Gold Cup meeting at Oulton Park on 24 September 1955, but it may well have been a pre-production MGA.
1974 MG Midget MkIII. The MkIII was produced from 1966 to 1974 and is considered the most desirable of the Midgets. It did not meet US federal safety regulations so was superseded in 1974 by the MG Midget 1500 (the one with the large black plastic bumpers).
This is 'the one with the large black plastic bumpers', a 1976 MG Midget 1500. The MG Midget 1500 was the last of the MG Midgets and production ceased in 1980.
An MGB, and the 'M' in the number plate relates to vehicles registered between 1 Aug 1973 and 31 Jul 1974 which infers that it is a MkIII model, produced between 1972 and 1980.
Over 10 years after production of the MGB ended the car was reincarnated in the form of the MGR V8 using the basic MGB bodyshell with a 3.9 litre version of the aluminium Rover V8 engine. Production ended in 1995 and the car in the photograph is a 1995 model.
This is another 1974 MG Midget MkIII, but this one was built later than the one shown in the earlier photograph as it has the 'N' registration of cars built between 1 Aug 1974 and 31 Jul 1975.