Most of the MG specials moderns - those with air scoops and IFS were I origianally thought probably MGB based - however looking the the top damper I think they are either TD TF or MGA because they have the earlier dampers. I am more inclined towards MGA because the exhaust appears of the wrong side for a T type.
The unpainted car is a T with a Q rep. body - the exhaust is running under the driver on this car which is a dead give away. There are two R types and 1 K3 with off-side exhaust exit - I believe Baynton Jones did some P and K series cars with twin cam heads - but I am reasonably sure that this car is a T type chassis.
The French cars in particular are lovely - a couple of Salmsons, Amilcars and my favorite from the late pre-war era a 320 series BMW. The cars have alway been a favorite of mine because they look so much more modern than their age - A 328 BMW is easily mistaken as a car of the 1950's.
Is the big brown car a Gobron-Brillie? (They were made in Belgium I think.) If so, it may well be the same car that "resided" here in Adelaide for many years. It had a very large opposed-piston engine, I think and the make (model?) was the first to reach 100mph?