Solved: GTE 529 - 1901 Rational (by Heatly & Gresham) with body by Wilsons of Royston

[Oguerrerob]

Santler?

[gte4289]

Santler?

No

[Oguerrerob]

Walker & Hutton?

[gte4289]

Walker & Hutton?

No

[Oguerrerob]

Wheeler?

[gte4289]

Wheeler?

No

[Oguerrerob]

Princeps?

[gte4289]

Princeps?

No

[Oguerrerob]

So far no:
Beaufort
Belle
Continental
English Mechanical
Royal Hereford
Regent
Atkinsons & Philipson
Blumfield & Garrard
Grose
Mytholm
James & Browne
Mo-Car
Johnstone
L'Hollier & Gascoine
Eadie
Hewison-Bell
Burford, Van Toll and Co of Twickenham
Great Horseless Carriage Co
Godiva
Stonebow
Payne & Bates
British Motor Syndicate
RM Wright
Brown and Buckton
Yorkshire Motor Co
Jackson
International Motor Car
Stirling
Toward by Coulthard
Rex by Birmingham Motor
Bassett
Vipen (Holderness) by East Riding Cycle
John Tipping Endurance car
Accles
Brown
Clacton
Bayley
London Motor
Bamber
The Automobile Association
Cockshoot
Raglan
Dougill
Sinclair Clift
Farnell
Dawson
Hurst & Lloyd
Bard
Rough
New & Maine
Hodgkinson
Lawson
Oppermann
Lamplugh
Turrell
Lifu
Hudlass
Pick
Mayfair/Sports
Caledonian
Simms Welbeck
Stephens
Santler
Walker & Hutton
Wheeler
Princeps

Achilles?

[gte4289]

No

[Oguerrerob]

Birmingham Motor (Williamson Bros)?

[gte4289]

Birmingham Motor (Williamson Bros)?

No

[Oguerrerob]

From a british magazine?

[gte4289]

From a british magazine?

My source was a book (originally published in the UK), which I found reproduced in its entirety online. However, the brand is mentioned in multiple online sources and has even been featured in a previous AP puzzle.

[Oguerrerob]

Molas?

[fromwien]

Ariel?

[gte4289]

Molas?

No

[gte4289]

Ariel?

No

[fromwien]

Turner-Miesse?

[gte4289]

Turner-Miesse?

No

[fromwien]

British Ideal?

[gte4289]

British Ideal?

No

[fromwien]

Chelmsford?

[gte4289]

Chelmsford?

No

[Oguerrerob]

Arnold?