Video available to watch on YouTube at: https://youtu.be/yS5GLmhZ0qI?feature=shared
Here we have an inspiring presentation detailing the activities of the community-led group 'Save Wolverton's swifts and martins'.
Some other resources you may find helpful:
RSPB information about swift bricks - https://www.rspb.org.uk/globalassets/downloads/about-swifts/swift-bricks.pdf
Conservation campaign about swifts and other cavity-dwelling birds: https://hannahbournetaylor.com/the-feather-speech-campaign-for-swifts/
Thanks so much for the opportunity BBOWT! Happy to share any info, email swsm@btinternet.com