The single largest brand name produced by Conway Stewart was the Le Tigre brand for Rene Kintz, who sold pens in Belgium and Holland. The list of models is too expensive to repeat here, and anyone interested in seeing examples can do so by visiting my website as given below:
http://conway-stewart.old-pens.co.uk/le_tigre.htm
Here is a sampler from the site:

Other brands produced by Conway Stewart are:
Combridge Birmingham No 1 with Combridge Birmingham nib c1925?
Jarrold's "Borrow" Pen with CS nib c1925?
Esterbrook Relief No 12
"Gyppeswyk", Cowell Ltd. Ipswitch with warranted nib c1933
"Puritan" No 9 with early CS 2 nib c1933
The "Clavo" Lever Pen with warranted nib c1935?
The "Constable" with warranted nib c1935?
The Dainty Pen with warranted nib
The Empire Pen No 46 with warranted nib c1925?
The Empire Pen No 112 with warranted nib c1925?
The "Exchequer" Pen with Duro nib c1925?
The Falcon No 1, c1932?
The Falcon No 2, c1935?
The Grenville, Harrods Ltd
The "Invicta", made for Lane's Library, Herne Bay & Broadstairs, c1930
The Jackdaw No 3, made for Gouldens, Canterbury and Dover, c1929
The Raleigh Lever Pen c1930
The "Repton" Pen No1 c1930
The "Somerset" Lever Pen, made for Selfridge, London c1930
The "Somerset" Lever Pen, made for Selfridge, London c1930
Svanstroms Royal Pen, CS Duro 40 nib, late1940's?
The Tudor Pen No 479M
The Universal Pen No 479, The Scholastic Trading Co Ltd, Bristol Excellent
The "Victor" No 820M
Images of all these pens can be found on my website, as given below:
http://conway-stewart.old-pens.co.uk/associated1.htm
and here is an example of a Svanstrom pen:

David