Mike Brotherwood
Well respected Lotus restorer with much experience of early Lotus Sports Racers

The most important site for March owners, Andy Gilberg has the original March drawings

Hall & Hall
What can I say, these people are great. They used to work in the original BRM engine test sheds and rebuilt the Scirocco to better than original condition.  Apart from BRMs they also know about Lotus 49s & Connaughts amongst many others

Simon Lewis Transport books
A useful web-site for hard to find memorabilia, books, and some very obscure photos (such as Brian McGuire in Willaims FW-04!)

Racecars Direct
A British website devoted to buying and selling racing cars

Elva Racing Components
If you ever need something for an Elva these are the people to get in touch with