Might seem a strange question, however, some old consoles that the UK could only use with RF output, or if really lucky, composite; were available with SCART output on French consoles with RGB...
Intellivision - RF only, you can composite mod if you know what you're doing but that's it. French model - composite and RGB.
Atari 7800 - RF only, composite mod is not easy at all, especially for PAL. French model - RGB (I have one).
ColecoVision - RF only, composite mod on NTSC is fine but doesn't seem to work on PAL, and if you swap the chips to get native composite you get rainbow effects on the image. French model - RGB (not sure about composite)
Commodore Amiga CD32 - (i'm working on that system at the moment, and GameCube) - RF, composite and S-video - but the French model does RGB.
Why did the French get these systems with RGB when the UK didn't - the UK is a larger market than the French one, so doesn't make sense! :shrug: