While filling a small history of each make + links to related makes, I realize that the British automotive industry is a so worse mess than what I thought So many companies buying each other in the 20th century, that's unbelievable.
I already updated many of the BMC/Leyland, I have the Chrysler / Rootes to do after.

For the make "PGO".
https://www.imcdb.org/vehicles_make-PGO.html

All the vehicles have been put under the Taiwanese make, there are vehicles from the French make.
The vehicles of the French make are those there:
https://www.imcdb.org/vehicles_make-PGO_model-356+Speedster.html
https://www.imcdb.org/vehicles_make-PGO_model-C%C3%A9vennes.html
https://www.imcdb.org/vehicles_make-PGO_model-C%C3%A9vennes+C.html
https://www.imcdb.org/vehicles_make-PGO_model-Speedster+II.html
https://www.imcdb.org/vehicle_141360-PGO.html

Wikipédia:
https://en.wikipedia.org/wiki/PGO_(automobile)
https://fr.wikipedia.org/wiki/PGO_(entreprise)

Here is the new page for the cars:
https://www.imcdb.org/vehicles.php?make=PGO-Automobiles

Thank you.

Logo and Infos for Caselani.
https://www.imcdb.org/vehicles_make-Caselani.html

https://fr.wikipedia.org/wiki/Caselani
https://www.facebook.com/caselani.official/

Updated. There are thousands of makes, I update these one by one from time to time when I land on them while renaming vehicles

https://www.imcdb.org/vehicles_make-Premier.html
https://fr.wikipedia.org/wiki/Premier_(automobile)

https://www.imcdb.org/vehicles_make-Perodua.html
https://fr.wikipedia.org/wiki/Perodua

https://www.imcdb.org/vehicles_make-Vehixel.html
https://www.transbus.org/construc/vehixel.html
https://fr.wikipedia.org/wiki/Trouillet_Mobilit%C3%A9_S%C3%A9curit%C3%A9
https://www.trouillet-mobilite.com/trouillet-mobilite-securite-constructeur

https://www.imcdb.org/vehicles_make-Gruau.html
https://fr.wikipedia.org/wiki/Gruau_(constructeur-carrossier)

https://www.imcdb.org/vehicles_make-Bollore.html
https://fr.wikipedia.org/wiki/Bollor%C3%A9

https://www.imcdb.org/vehicles_make-Unic.html
https://fr.wikipedia.org/wiki/Unic_(entreprise)

https://www.imcdb.org/vehicles_make-Irisbus.html
https://fr.wikipedia.org/wiki/Iveco_Bus

https://www.imcdb.org/vehicles_make-Rapido.html
https://www.rapido-camping-car.fr/
https://fr.wikipedia.org/wiki/Rapido_(entreprise)

https://www.imcdb.org/vehicles_make-Sovam.html
https://sovam.fr/
https://fr.wikipedia.org/wiki/Sovam

Cf my comment above: there are thousands of makes, for many of them it is easy to find the info, it is just a matter of time to update the page.
For ex-USSR makes it is often more difficult to find info though.

Yes, I saw your first comment, that’s why I don’t put you brands where we can add logos and some additional information.

I came across this "Phillips" brand.
https://www.imcdb.org/vehicles_make-Phillips.html

Where the coupe is indeed of American origin, but has no connection with the two wheels.
For this:
https://www.imcdb.org/vehicle_2049061-Phillips-Berlina.html
Year is 1980-1983.
Phillips Motor Car: A historic car manufacturer known notably for the Phillips Motor Car Berlina Coupe, a rare model produced in only 78 examples
https://johnscotticlassiccars.com/inventaire/occasion/1981/phillips-motor-car/berlina-coupe/980
https://en.wikipedia.org/wiki/Phillips_Berlina
https://de.wikipedia.org/wiki/Phillips_Motor_Car_Corporation

For there:
https://www.imcdb.org/vehicle_117939-Phillips.html
https://www.imcdb.org/vehicle_1586216-Phillips-Panda.html
Phillips Cycles Ltd. (based in Smethwick, England), which at the time was part of the Raleigh Industries/Tube Investments group.
https://en.wikipedia.org/wiki/Phillips_Cycles
https://www.icenicam.org.uk/articles1/art0021.html

Thanks, I'll update these later

edit: page added for the car, https://www.imcdb.org/vehicles_make-Phillips-Motor-Car.html

Thanks.

https://www.imcdb.org/vehicles_make-Fleurette.html
https://fr.wikipedia.org/wiki/Fleurette_Camping-cars
https://www.fleurette-florium.fr/

https://www.imcdb.org/vehicles_make-Pilote.html
https://fr.wikipedia.org/wiki/Pilote_(entreprise)
https://www.pilote.fr/

https://www.imcdb.org/vehicles_make-Challenger.html
https://en.wikipedia.org/wiki/Challenger_Tractor

For the creation of the brand "Challenger" (motorhome).
https://fr.wikipedia.org/wiki/Challenger_(camping-car)
https://www.challenger-camping-cars.fr/
Some vehicles that can be referenced under this make:
https://www.imcdb.org/vehicle_1529920-Fiat-Ducato-2011.html
https://www.imcdb.org/vehicle_1024993-Ford-Transit-V347-8-2006.html
https://www.imcdb.org/vehicle_1274801-Peugeot-J5-1990.html
https://www.imcdb.org/vehicle_897145-Peugeot-J5-1990.html

https://www.imcdb.org/vehicles_make-Thor.html
https://en.wikipedia.org/wiki/Thor_Industries#Thor_Motor_Coach
https://www.thormotorcoach.com/
Vehicles that can be referenced under this make:
https://www.imcdb.org/vehicle_540752-Ford-E-350-2001.html
https://www.imcdb.org/vehicle_1880101-Ford-E-350-2014.html
https://www.imcdb.org/vehicle_1819195-Ford-E-350-2020.html
https://www.imcdb.org/vehicle_1963717-Ford-E-450-2009.html
https://www.imcdb.org/vehicle_1354717-Ford-E-450-2016.html
https://www.imcdb.org/vehicle_1166505-Ford-E-450-2017.html
https://www.imcdb.org/vehicle_1345134-Ford-E-450-2017.html
https://www.imcdb.org/vehicle_1525759-Ford-E-450-2019.html
https://www.imcdb.org/vehicle_1379501-Ford-Econoline-E-350-1991.html
https://www.imcdb.org/vehicle_1888306-Ford-Econoline-E-350-1992.html

https://www.imcdb.org/vehicles_make-Lamborghini.html
https://en.wikipedia.org/wiki/Lamborghini

https://www.imcdb.org/vehicles_make-Saleen.html
https://en.wikipedia.org/wiki/Saleen

https://www.imcdb.org/vehicles_make-Dietrich.html
https://www.transbus.org/construc/dietrich.html
https://www.dietrich-vehicules.fr/
https://www.dietrich-vehicules.fr/dietrich-vehicules/?_gl=1*es0xn1*_up*MQ..*_ga*ODgwMDkyNDY2LjE3OTM0MDkxNTM.*_ga_SJ98GH7C5E*czE3OTM0MDkxNTM- kbzEkZzEkdDE3OTM0MDkxNzUkajM4JGwwJGgw

There are three "Scorpion" trade marks to be separated.
For these:
https://www.imcdb.org/vehicles_make-Scorpion_model-4x4+Mark+IV.html
Make (origin: USA):
https://scorpion4x4.com/
https://www.drivingyourdream.com/store/p784/ScorpionMKIV.html
https://www.facebook.com/profile.php?id=100064535514976#

For this:
https://www.imcdb.org/vehicle_2028044-Scorpion-Formula-Junior-1960.html
Make:
https://formulajunior.com/marque/scorpion/
But, isn’t the manufacturer "Elva" (origin: UK) ?
https://www.imcdb.org/vehicles_make-Elva.html
https://fr.wikipedia.org/wiki/Elva_(automobile)
"1 of 9 cars built by Rytune on behalf of Elva cars.", so Elva 100 Formula Junior.
https://rmsothebys.com/auctions/mc12/lots/r398-1959-elva-100-formula-junior-racing-car/
https://www.mikadoracing.com/Annonce-2025494-FORMULA-JUNIOR-ELVA-100.html
https://www.lespistonsracing.fr/annonce/a/elva-formel-junior
https://www.flickr.com/photos/markfaviell/5745571794/

For this:
https://www.imcdb.org/vehicle_312950-Scorpion-70-1970.html
Make:
https://www.oldracingcars.com/indy/results/1970/ontario/#note2
https://www.oldracingcars.com/indy/results/1970/phoenix/nov/#note3
https://www.champcarstats.com/races/197103.htm
The Scorpion 70 is a racing single-seater designed by Clint Brawner.
So, isn’t the manufacturer "Brawner-Hawk" ?
https://www.imcdb.org/vehicles_make-Brawner-Hawk.html
https://en.wikipedia.org/wiki/Brawner_Hawk

Indeed, the formula junior can probably be linked to Elva and the other one to Brawner-Hawk, as that one is already some mix of various cars not always very clear of who did what between the two