As one of those (younger) British-VJ-types I’m yet to hear anyone mention the Dave, but I think this only adds to the sense of mystery…
From what I can find online Snell + Wilcox were based in Newbury which is a market-town about halfway to Bristol from the capital (along the canals, nice pubs), and had bunch of ex-Sinclair engineers working for them. Then recent history gets weird - they became SAM (Snell Advanced Media), then Quantel Ltd, then taken over by BELDEN Inc; finally rebranded as Grass Valley products, and last year sold to Black Dragon Capital. With all references of Dave expunged from the internet.
Sometimes calling up the company you have the nice conversations with older employees who might help find an old service manual from the filing cabinet (big up Vivanco, Extron) - but in this instance Grass Valley was call-centre hell - no such product found.
So this is where it gets conspiratorial. Newbury is just a stones throw from Avebury and Glastonbury; The Barge Inn, the long man - sites of crop-circles and megalithic stone structures.
Dave has promised us magic powers and yet now its like he never existed…
Where is Dave?