A Community Network for Bowes Park and Bounds Green
Have a look at this, Paul
In addition to the video Lindsey linked to, there is some British Pathe archive footage of a 1930s diving dispay here: http://www.bowesandbounds.org/video/durnsford-road-baths-diving-dis...
Perhaps the Bruce Castle museum and Local History Archive may help with old photographs?
There are two postcard views of the Lido in my book on Bounds Green. I have a couple more which I will post in due course.