The 1st entry is.. "Cityidea" from China!!
http://www.cityidea.org/
http://www.cityidea.org/product.asp
An eBay seller " badtzmaru1216 " sells some of these and he claims the following difference between Sinclair A-bike and Cityidea A-bike.
Q1: Is this a original Sinclair A-bike? Where does it come from?
A1: No. This is a Cityidea brand folding bike made by a Chinese manufacturer.
Q2: What is the difference between Sinclair A-bike and Cityidea bike?
A2: Sinclair A-bike is a british registered trademark and Cityidea is a Chiese trademark. Cityidea bike takes most of the specifications from Sinclair A-bike in shape, material and color. The manufactuere has made some improvements based upon feedbacks from sutomers, they are:
a) Widen handlebar. This will help you to control the little bike much easier.
b) Larger and more comfortable saddle. Cityidea bike enlarges the seat 25% in proportion, besides, more sponge material has been added to it and this makes your journey more comfortable.
C) Smaller wheels. Smaller wheels helps to reduce the friction drag caused by the ground.
d) Enhanced drivetrain. Improved real wheel chain system in high performance makes it smoother and more comfortable ride on.
e) 110 Kg max weight. Cityidea bike could support 110 kg in weight.
A2a and b seems to be true. their handle bar is 47cm and saddle looks a bit more puffy, but the rest? I don't understand.... especially the point c...
The cityidea headquater sells A-bike spare parts as well. (see full listing, go to http://www.cityidea.org/product_pj.asp )
EDIT seems they have changed the page. Look for it here.
http://www.cityidea.org/