Acknowledgements

We are very grateful to Mythic Beasts Ltd and The Ringing World for providing us with free internet hosting.

This site makes use of the following data, services and software:

• PHPCoord PHP library by Jonathan Stott and Doug Wright
• Kolombido HTML and SQL PHP libraries by Richard Smith
• The zipfile PHP class by Eric Mueller
• Open Postcode Geo API, which is derived from the ONS Postcode Directory
• jQuery JavaScript library
• jQuery UI JavaScript library
• OpenStreetMap – a community-drived open-source map
• Overpass API for verifying the regions a tower is in
• Wikishire lookup API which uses data from the Historic Counties Trust
• OpenLayers JavaScript library
• Libertinus fonts, which derive from the Linux Libertine fonts by Philipp H. Poll