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Part consultancy, part thinktank, part social enterprise, Halcyon helps you prepare for and respond to personal, organisational and societal change.

Halcyon's 52:52:52 campaign on Twitter will help you address 52 issues with 52 responses over 52 weeks.

To be a catalyst is the ambition most appropriate for those who see the world as being in constant change, and who, without thinking that they control it, wish to influence its direction - Theodore Zeldin

A Mundane Comedy is Dominic Kelleher's new book, which will be published in early 2020. We will be publishing extracts on this site and across social media during the first quarter of 2020. Please feel free to contact us with any questions about the book.

Avebury

On Silbury Hill

Way back in 1999 I registered the internet domain name silburyhill.com and paid to maintain it for several years, without ever really doing anything with it. I eventually let the registration lapse, but even now, new developments at Silbury continue to resonate in me in a way that I can't easily put into words.

Silbury Hill

Why did I feel compelled - no other word will do - to acquire silburyhill.com as my first personal URL (and why did I pay a not inconsiderable sum to hold onto the URL for a few years, despite being far from ready to launch my own website back then?)