Moore Kingston Smith Acquires Moore South Expanding UK Advisory

Moore Kingston Smith, a leading accounting and business advisory firm operating across the UK and Ireland backed by Waterland Private Equity, has completed the acquisition of Moore South on April 15, 2026. Moore South is a well-established 13-partner firm with offices in Chichester, Guildford, the Isle of Wight, Salisbury, and Southampton. This merger represents a key strategic expansion into the South of England and is the tenth investment by Moore Kingston Smith since receiving private equity backing.

Moore South brings a team of 92 employees and a strong reputation for serving owner-managed businesses (OMBs), entrepreneurs, and larger international organizations. The firm’s longstanding client relationships and regional expertise complement Moore Kingston Smith’s existing operations, which now encompass over 120 partners and 1,600 staff across the UK and Ireland.

The transaction, structured as a full acquisition, aims to enhance client service by integrating Moore South’s advisory capabilities with Moore Kingston Smith’s broader service portfolio. While financial terms were not disclosed, the deal is expected to generate synergies through cross-selling expanded advisory services, leveraging the Moore Global network for international client opportunities, and achieving operational efficiencies.

Moore Kingston Smith’s leadership highlighted the strategic fit, noting Moore South’s alignment with their focus on start-ups, family-run firms, and regional owner-managed businesses. The merger is described as an evolution toward a truly multi-regional business in England, complementing recent acquisitions in Ireland and Northern Ireland.

Industry context shows increasing consolidation within the accounting and advisory sector, with firms seeking geographic expansion and service diversification to meet evolving client demands. Moore Kingston Smith’s move strengthens its competitive position in the South of England, a region with a vibrant SME and entrepreneurial community.

Financial details remain confidential, but the acquisition is expected to deliver value through enhanced client offerings, operational integration, and economies of scale. Integration plans include aligning client management systems, standardizing advisory methodologies, and fostering collaboration across offices to maintain service continuity and retain key talent.

Looking ahead, Moore Kingston Smith aims to deepen client relationships and attract larger and international clients by leveraging combined expertise and the global Moore network. The firm acknowledges integration challenges such as cultural alignment and managing client expectations but remains confident in the strategic benefits of the merger.

This acquisition underscores Moore Kingston Smith’s commitment to growth and its ambition to be a leading multi-regional accounting and advisory firm in the UK.