In a judgment published last week, the court said it could find no evidence that Magill, who at the time worked for Deloitte & Touche, had acted unfairly.
Magill spent over 12 years engaged in proceedings against former council leader Dame Shirley Porter. The £3m investigation centred on claims that the council had engaged illegally in a housing sales policy designed to keep the London borough under Conservative control.
Magill imposed a £31.7m surcharge on six individuals involved in formulating the policy in 1996. A series of appeals have seen the claims against Dame Shirley and David Weeks, her successor as council leader, upheld, though the surcharge was reduced to £26.4m.
Brian Burke, business development director, has moved within the firm to 'develop Quantuma’s networks with Sussex professional firms'
Stephen Mills joins the Manchester office from IBM, where he spent 12 years as an associate partner in the data, analytics and cognitive consulting group
Rupert Guppy will be responsible for capital allowances in the southern region, and joins the firm from specialist consultancy E3 Consulting
Richard Lewis has been appointed to the firm's restructuring and recovery services team