Technically, it's not British. The first 100 of these things were actually produced in the United Kingdom but by a different country's auto company. The reminder of production was in a different part of the world.
Must be a bit difficult. I'll post an easier one in the future.
This sports cars is a:
Sabra Sport from 1962. It was commissioned by Autocar of Israel to Reliant, a French company. The Sabra Sport was build between 1962 and 1969 - The Six Day war got in the way a bit. Over 100 of them exist worldwide today.