Fit-out firm with £15m turnover and which was responsible for Tory HQ goes under

London fit-out firm John O’Neill and Partners has fallen into administration.

The £15m-turnover firm, known commonly as Jonap, has done a number of high-profile contracts, including a fit-out of Conservative HQ in Millbank Tower.

Two winding-up petitions were launched against the company in recent weeks, the most recent of which was heard last Thursday. Administrator Leonard Curtis was appointed to the firm on the same day.

The firm is understood to have been pushed under following disputes over payment on the now complete £100m luxury Corinthia Hotel refurbishment next to Trafalgar Square on which it was a fit-out subcontractor.

The administrator has confirmed the appointment but has not yet made any comment as to the impact of the administration on employees and customers of Jonap.

According to its latest accounts John O’Neill and Partners, which is based in Teddington, Middlesex, made a profit of £194,000 in the year ending 31st March 2010, down from £405,000 the previous year. Turnover was £14.99m.