This is the YouTube channel of someone called, er, David Collison
Mentions of history, genealogy, transport, London, the Cinque Ports, quizzes, sudoku, recreational maths, graphic design, technology and other geeky stuff may help to confirm whether or not you have found the correct David Collison
Conversely, this website is not about any of the surprisingly-large number of namesakes who are apparently active in diverse disciplines such as taxation, theatre, chemistry, pickles, medicine, conservatories and US politics