Tap a role below for more
A dozen technical books and countless articles.
Twenty apps for Apple, Amazon and Android.
Working with Thames Valley Police and the Met.
Jeff has been a founder and chairman of a number of public and private companies.
River Thames Guide, developed by Jeff Maynard, is the official British Marine app and the complete guide to leisure on the River Thames (tidal and non-tidal) and the Wey Navigation.
Have Siri speak the current conditions for any stretch of the non-tidal Thames.
Get today's weather, sunrise and sunset times, wind predictions and more.
Visit the download site (from your iOS device) and select the shortcut(s) to install.
follow the Apple instructions after downloading; to run teh shortcut single tap is all you need
The guide includes an interactive map, journey planner, help and guidance, lock info, current river conditions and much more; the app is available for iOS (iPad, iPhone, iPod), MacOS, Android and Amazon Fire; Windows users can have all the app functionality via a web site.
Police volunteers provide a range of support functions (depending on individual skills and expertise).
Jeff is accredited by Thames Valley, Surrey and Sussex Police forces as a Fraud and Cyber Crime Prevention Specialist.
Read what it takes to be a police volunteer .