Roy's book also includes likely the first comprehensive listing of Villiers engines numbers to be published and I quote, 'Whilst incomplete, it is believed that this is the only comprehensive Villiers engine listing outside the factory and it is presented in that light to offer assistance to readers' Incidently, Roy mentions our late dear and sorely missed mate Chris Goodfellow ('Riflegreen' on here) in his acknowledgements for supplying later Greeves information for his work. 'Villiers Singles & Twins' by Roy Bacon (1992.) The info JW gave above on the Ambassador Super S can be found in Part Three Appendix/Villiers Engine Numbers, pp 131, on page 149 in the 'Machine Specifications' section. For more on John Wood and his excellent books and website, see this link Some industrial engine codes have been added.' John Wood also produces the excellent 'Villiers Improvements Handbook', once again co-authored by our own Rob Carrick. It is by no means complete, but is now considered to be the most comprehensive list available to Villiers motorcycle engine users. In the introduction to the appendix, the authors state, and I quote, 'The following list has been compiled by John Wood and is the result of his detailed investigation, with information being gathered from many sources. The info JW gave is contained in Appendix 4, pp 262, on page 274.

'Villiers - Everybody's Engine' (2010.) Written by ex GRA member and Villiers engine specialist of world reknown Rob Carrick and Mick Walker, author of over 115 books on motorcycling, both now very sadly no longer with us and much missed.

In the interests of assisting members who wish to identify a Villiers engine unit, assuming of course that the ID number plate is 'original ( !), I'd like to point out that the info given by John Wakefield above can be found in the following publications

Villiers engine serial numbers