Fifteen months after the Team Sky professional cycling squad took to the road an independent, year-long inquiry by Deloitte into the team's relationship with the Great Britain track cycling set-up is due to present its key recommendations on Wednesday. The report's findings were initially expected to be made public by the end of January.

The report was jointly commissioned by British Cycling and UK Sport in March last year and after an initial completion date of last summer – and a cost said by UK Sport at the time to be about £40,000 – it moved into greater detail in a second phase that began last July. "Nuts and bolts," said one source at the time, and now, perhaps, some of those details will be revealed, although the complete report will not be made public. "It is an operational report," said a British Cycling spokesman.

Shortly after Deloitte began work a UK Sport spokesman told the Guardian that it would have three objectives: to investigate the operational arrangements between Team Sky and the Great Britain team – in other words how the two teams work together with shared services – how the risks associated with a professional cycling project were being managed and whether Great Britain's cyclists were meeting their performance targets.

UK Sport and British Cycling have kept the report's findings close to their respective chests, with the only indication of its contents coming last month when Dave Brailsford, team principal at Sky and the Great Britain performance director, said: "I think there were doubts about me doing both jobs and there was a report done by Deloitte and they came up with nothing."

Those "doubts" arose from the fact that Team Sky are unique among professional cycling squads because they are jointly run by a commercial sponsor and a national team. Sky "buys in" some services from the national team and shares a variety of coaching and senior management staff with the GB set-up, including Brailsford, the head coach Shane Sutton, the psychiatrist Steve Peters – Sky's head of medical – and Rod Ellingworth, who is race coach at Sky and also manages the Great Britain team for the road race world championships.

Sky came in as the lead sponsor of British Cycling in June 2008, and Brailsford began working on the Team Sky project immediately after the cycling team's triumphant return from Beijing in August 2008. Brailsford has always stated that the key aim for Team Sky is to enable British road cyclists to combine effectively a professional career and riding for Great Britain without "club v country" conflict.

The Team Sky riders Bradley Wiggins and Geraint Thomas were among a GB team pursuit quartet who won the recent World Cup in Manchester, and another Sky rider, Peter Kennaugh, has just been selected for the world track championship in Apeldoorn, the Netherlands. However, Sky also include foreign stars, and there have been questions about whether they should be given access to British expertise.