Door #3

US made Bike Friday offers a lot more custom choices..
drive train and such..
NWT, and Pocket Llama are 406 wheel.
NWT has a lower BB, than PL, both offer a size choice, S,M,L.
dual drive rear hub, just like the TR, one of the options.

The others are a just one size manufactured product,
as far as the frame goes..
then you adapt to the bike rather than the other way round.

I just got a Pocket Llama , discounted as the built to order customer
didn't like the color.
I'm swapping in favorite parts, now..

but, sorry, their reconditioned bikes don't export.. from CONUS.

Avon in the UK your nearest to Greece dealer?

the Friday Tikit is their 349 wheel bike, shares wheel sizes/ tire spares with Brompton.
seat folds , rather than telescopes,so your saddle adjustment remains fixed.

also offers size choices and component menu.

I got a 2nd hand Brompton last year, there I got a Schlumpf Mountain drive.
for 6 speeds
a mountain climbing range is the low reduction geared advantage.

AW3 , w15t cog the 54 on the crank has an effective low of 21.6t
when the planetary is kicked in .. 17~77 " gear range