Tottenham are amongst the clubs leading the Premier League's charge into profitability and sustainability according to Deloitte's 2015 Review of Football Finance.

Both Spurs and local rivals Arsenal were among nearly half of the league's clubs that improved their net debt/funds ratio. As a whole nine clubs, led by the two north London sides and Aston Villa, reduced their net debt by £205 million in the 2013/14 season, the most recent for which the company has obtained figures.

However it was not entirely good news for the capital's clubs. In spite of Chelsea's transfer policy bringing in big money for squad players such as Andre Schurrle, Kevin de Brunye and Romelu Lukaku this season's champions became the first club to top £1 billion in net debt.

During the 2013/14 season, when the club spent £30 million on Willian and £21 million on Nemanja Matic, owner Roman Abramovich provided £57 million in additional loans to the club he has owned since 2003.

With the club having brought in a record £99 miillion in prize money this season, and earned around £100 million in the transfer market, the club should be able to lessen their reliance on their wealthy owner.

With a series of bumper new television deals taking league revenue to £3.3 billion, over £1 billion more than nearest rival the Bundesliga, the outlook for clubs in the top-flight looks increasingly secure, with net debt amongst the 20 sides reduced by six per cent to £2.4 billion. In total 19 of the 20 clubs made an operating profit and for 13 it was their highest ever. Step down a division and the average Championship club is losing £9 million, emphasising the struggles for those surviving outside the monied elite.

New TV deals allowed the biggest clubs to record their highest ever profits. Manchester United recorded the league's largest-ever operating profit of £117 million whilst Tottenham made a pre-tax profit of £80 million.

These figures point to the growing disparity between the league's high flyers and the rest. As commercial revenue in the Premier League rocketed to £884 million 78 per cent of those commercial earnings were split between the four sides in the Champions League, Tottenham and Liverpool.

With Deloitte predicting that the total value of Premier League broadcasting rights during the next three year cycle (2016/17 to 2018/19) could top £9 billion it seems unlikely that this English success story will end any time soon.