Talbot was a right mix of Simca and Rootes, created by Chrysler then sold to Peugeot.
So they ended up trying to make French and British cars look similar.
3 Small hatches, 1 good
Samba - small French like Peugeot 104
Sunbeam - bigger British, hatch version of Avenger
Horizon - rattley POC from France, 5 door
Bigger cars were the Alpine and Avenger lines.
The French cars were more advanced, but the British ones were a better drive, better handling, to me better looking, (and more reliable).
The best hot hatch of that era had a Talbot badge
Rootes main stay engine was a pretty reliable 1600 OHV with short pushrods, 8 port, large bore and short stroke, safe to over 7000rpm. Was well designed by a known engine designer I cannot find the details of.
Simca was another OHV design which got very rattly.
https://en.wikipedia.org/wiki/Simca_Poissy_engine