Good to see some details of Nigel Dean.
I've done no research on him personally, but there are many 'names' in this category.
Sid Mottram comes to mind here. (from an earlier generation admittedly) Some of his were made by Wally Green & Mercian, quality machines I'd say. I happen to have a very nice road/path of his currently.
But who made Nigel Deans?
Further, who makes Boardmans? 'Inspired by' Chris Boardman (has his name attached) is the current hype.
Bit like Ernie Clements who was 'associated' with Falcon at the time. ('Designed by' Ernie C, but made in a factory using his good name to sell the product)
Decals do not a bike maketh.....?