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Public Sector Insource (PSI) Ltd was founded in 2018 by industry expert, Dwayne Brook. In the late 1990's Dwayne co-founded a successful architectural design and project management company, ultimately selling the company to a FTSE100 company, whom he then worked for as a Commercial Director for a number of years, overseeing billions of pounds worth of tenders on a multitude of public sector projects, until he left to form PSI Ltd in 2018

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The PSI business model is to augment capacity and capability in client teams (public sector and private to public providers (UK & International) by insourcing experts into the client organisation from board  level to project level.   Our vision is to add value by providing innovative and entrepreneurial commercial solutions to help clients reach their strategic aims quickly and efficiently.  Due to its business model PSI is not an outsourcer, not an agency and not a typical consultancy.

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Since its formation PSI has supported over £4bn of successful tenders to UK Public Sector, successfully negotiated in excess of £100m disputes in ICT and FM/Construction contracts in the UK and internationally , helped create a joint venture, managed one acquisition and one business disposal and has led the design and delivery of a number of business cases

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​In April 2023 the company became a subsidiary of investment firm, PSI Asset Management Ltd

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