I am an area adviser for Swift Conservation in Yorkshire. If you require advice on roof repairs where Swifts are known to nest or you would like advice on starting a new colony please phone 01439 788014 or email me on firstname.lastname@example.org .
Swift Conservation have great advice on their website, with pages on roof repairs where a colony exists, making nestboxes, even Swift shopping and much more!
There will be much more about Swifts on my blog when they arrive soon. Here are some of my swift sketches.