I have just come across these short videos on youtube about the history of Lendal, including some great interviews with Alastair and Marianne Wilson.
Lendal History – Start:
There are also some videos about the products being made (please bear in mind that these were filmed in 2007 so not all the information is still accurate for the range today, but is still fascinating to see!)
Lendal Shaft Materials
Lendal Shaft Design