Some correct comments mentioned Morgan V8 (talk about chassis flex!), TR-8 (made a decent car out of the TR-7- one of the worst cars ever- but I once drove a TR-8 800 miles in ice and snow and talk about scary), and MGB-GTV8 (Yes they were never imported to my knowledge but seemed to be OK cars) and of course lots of Land Rover variations. The MGC was not a V8, it was a 3 liter straight six truck engine like a late AH 3000 with torsion bar suspension and so nose-heavy it understeered like an aircraft carrier. I sold my Elan (#110) and took in trade a TVR Griffith- the original. (talk about trading ice water for chilled piss!), 260 Ford with a Ford 4-speed in a glass body with a tail like a Manx cat. The drivetrain blocked part of the passenger compartment and the center console had a level top like a coffee table. My wife drove it to work while pregnant and folks would gather to see her get in and out. Lots more common in the USA than most of the cars shown. .
Correct on the Jensen Interceptor but it was preceded by the 541or C-V8. One of the ugliest cars ever, styled by amputees, but glass body and a 383 and quick- capital Q. Once motoring about 65 on I-75 I was next to Mr. Sports Car in his Karmann-Ghia convertible with the top down and his British flat cap. He gave me the V-sign and I smiled back, punched it and was GONE.
Tigers were great until you had to get on your knees to replace the rear plugs through the sides of the console. Maxwell Smart drove an Alpine, Britney Spears to Tiger's Serena Williams.
The Marcos shown looks like a Pride parade but I think is called a Mantula. Marcos made Straight fours and sixes, V-4 and V-6, and whatever other proprietary emgine was available. The previous model was a Marcos GT originall with a wooden chassis so you didn't know whether to have it Ziebarted or Terminixed.
No one mentioned the Daimler Dart aka SP-250 V8. Ugly but quick and went though clutches more often than brake pads. GT-40 was indeed a British car but very much modified by Shelby, enough to be American.
Under the heading of totally stupid, I once took in trade a Bugeye Sprite into which the owner had dropped a 383 Chryler. The new firewall occupied most of the footwells and the headers just the the side of it burnt the right calf if you could even drive it, Went like stink till it overheated and it took three men and a boy to try to bend it around a corner. I have was a used British car specialist from 1958 on, so Been there, Done that .