• We specialise in helping clients design, build, and grow their marketing ecosystem:- agency search, relationship management, compensation consulting, roster management, agency transformations & performance management.
  • We’ve worked on leading brands including:- Asahi, Birds Eye/Iglo, Domino’s, Dreams, Essity, GDK, National Express, Organix, Rana, Santander, Volkswagen, & Wickes.
  • Hamilton Associates (HAI Consulting) is one of the UK’s leading marketing Intermediaries, represented at the Adforum Worldwide Summit for the last ten years – we’ve been running pitch processes and transformations for the last fifteen years.
  • From offices in Henley on Thames and London, and with overseas Associates, we tailor our consultancy services specifically to client needs – helping them navigate the complexities of managing performance.
  • Independent & dedicated – we’re on hand to help you, and support you through the pitch process where we can.
  • New office openings in London – Henley – Singapore – and Sydney.


Sarah M“Will is a very trusted advisor and has supported me as my outsourced commercial team. This has involved benchmarking fees & contract negotiations with my incumbent creative & media agencies. This has proven to be an extremely valuable process – with tangible significant savings but also ensuring we maximize the output and performance of our agencies. These fee & contract conversations can be sensitive but Will manages the situation with diplomacy whilst focusing on getting value for his client.
Will has fantastic knowledge of the agency landscape and I would recommend him for any commercial projects like my experience or if you are seeking to appoint new agencies.

Top qualities: Great Results, Personable, Good Value
Sarah Mellor
Marketing Director – Giovanni Rana



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