Dave Ainsworth is a Cockney and worked professionally as a Stand-Up Comedian on the London club circuit for five years alongside Paul Merton, Jo Brand and Jack Dee. With Nick Smith [brother of comedian Arthur Smith] he formed a comedy duo called "The Natterjacks" performing at venues like the Comedy Store and Jongleurs then in 1986 they established the Tattershall Comedy Club in north London. Interviewed in the Western Mail he is quoted: "When Jack Dee was starting out he did his first gig for us. We also worked with people like John Hegley and Jo Brand. She wasn't called by that name in those days, she was called the Sea Monster! It wasn't hard to spot the people who were going to make it. You would see people like Kevin Day, Paul Merton, Arthur Smith close-up and think, these guys are amazing!"

Nowadays he lives at Pembroke, in Pembrokeshire, and teaches at Pennar Junior School in Pembroke Dock, being an honours graduate in drama, and has learnt Welsh. He is married to Sue and they have two sons, William and Tom, who were born in Pembrokeshire.

On Sunday August 5th 2001 there was the premiere, at the Torch Theatre in Milford Haven, of a one-act play he has written entitled "Oh! Hello!". As will be appreciated by Carry-On film buffs (!) the title is the catch-phrase of Carry-On stalwart Charles Hawtree, and the play focusses on the actor's final years. Dave Ainsworth, himself, performed the one-man play and interviewed in the local Western Telegraph newspaper is quoted: "Peter Doran [Director of the Torch Theatre] liked the book [Silly Mid Off] and the idea of using local writers in some context. I showed him a play I had written about Charles Hawtrey and he thought it would work well as a one-man act." He has also written a radio play for BBC Radio 4 entitled "Moving Mountains" which is set in Pembrokeshire.