London-based Catalyst Development, a specialist financial markets consulting firm, will combine with global financial services specialists Sionic Advisors. Livingbridge backs catalyst Development. Financial terms were not disclosed. The deal is set to create one of the world’s largest and fastest-growing specialist consulting firms, operating with a fully internationalized platform for their global client base. “This is a transformational merger that will create a world-leading specialist firm. Sionic has highly regarded expertise in our core banking market, enabling us to scale our delivery of complex assignments for clients worldwide, and a leadership position in the US and Canada. Catalyst has a lead position in London and both offshore and nearshore offices, along with specialist asset and wealth management expertise, an international track record in people, talent and change and a global track record of developing financial markets infrastructure for clearinghouses and exchanges," Andrew Middleton Catalyst Group CEO.