Horizon Capital, a private equity firm, completed a majority investment in Turnmill, a capital markets events business company. Financial terms were not disclosed. "This is an exciting time for Turnmill, our clients and colleagues. Turnmill has grown in recent years thanks to the hard work of work of our colleagues and the support of our clients, and we look forward to continuing to build on that success. We are delighted to be partnering with Horizon Capital who have a strong track record in supporting companies such as ours to accelerate both organic and acquisitive growth," Alex Johnson, Turnmill CEO.