News that Paul di Resta has apparently ended his relationship with manager Anthony Hamilton has leaked on the eve of the biggest race of the British motorsport season.

It is believed that the break-up happened some weeks ago and, although no official confirmation, or the reason for it, has yet been forthcoming directly from either party, Britain's Daily Telegraph newspaper says that a spokesman for di Resta has conceded that the pair are no longer working together. The news broke just two days before the British Grand Prix at Silverstone, where the Scot is expected to be a contender for points, and where Hamilton will be on hand hoping that son Lewis can return to winning ways with McLaren.

Hamilton Sr took on the role of looking after di Resta's career when the Scot was still in the DTM, but helped guide him, first, into a reserve driver role with Force India and then, on securing the 2010 DTM title, into a full-time race seat with the Silverstone-based team. di Resta is now being touted as a possible target for McLaren, Mercedes and Ferrari should one of their drivers decide to move on in the next year or so, and will aim to cement his reputation with another strong showing at his home race, having helped Force India to a record 16-point haul in the recent European Grand Prix in Valencia.