David has been an author and accomplished speaker for over 40 years. He speaks on topics including personal improvement, risk and questioning techniques. As a qualified and experienced practitioner he also gives talks on more technical topics, such as Business/Organisational Resilience, Organisation Risk and Cyber Security at a basic to advanced level.

David believes in giving back to the community and is often heard saying he enjoys speaking but it is the questions, afterwards, that he enjoys the most.