Southampton have described the decision to expel them from the Championship playoffs over the ‘Spygate’ scandal as “manifestly disproportionate” to any other sanction in the history of the English game. An independent commission on Tuesday imposed the penalty – which includes the docking of four points for next season – after the club admitted three spying charges, including one related to observing a training session of their playoff semi-final opponents, Middlesbrough, this month.

The commission also reinstated Boro for Saturday’s final, denying Southampton the chance of promotion to the Premier League worth an estimated £200m.

“The commission was entitled to impose a sanction,” said Phil Parsons, Southampton’s chief executive. “It was not, we will argue, entitled to impose one that is manifestly disproportionate to every previous sanction in the history of the English game. We believe the financial consequence of [the] ruling makes it, by a very considerable distance, the largest penalty ever imposed on an English football club.”

Parsons said Leeds had been fined £200,000 for a similar offence, adding: “Luton Town’s 30-point deduction in 2008-09 – to date the most severe sporting sanction in the English game – was levied against a club already in League Two, with no comparable revenue at stake. Derby County’s 21-point deduction in 2021 cost them their Championship status. Everton’s six-point deduction in 2023-24 followed losses of £124.5m, a figure dwarfed by what has been taken from Southampton in a single afternoon.

“We say this not to minimise what occurred at this club, which we have accepted was wrong. We say it because proportionality is itself a principle of natural justice.”

Parsons conceded that what Southampton had done was wrong and said they were sorry to the other clubs involved, and “most of all, to the Southampton supporters, whose extraordinary loyalty and support this season deserved better from the club”.

Southampton admitted to spying on a training session at Oxford in December and one at Ipswich in April, in addition to the Middlesbrough session. All three incidents occurred after the appointment of Tonda Eckert as head coach in early December.

Middlesbrough had called for Southampton to be thrown out of the playoffs before Tuesday’s commission hearing and welcomed the news they had been expelled. The club said the sanction “sends out a clear message for the future of our game regarding sporting integrity and conduct”.

On Wednesday afternoon, Boro began selling tickets for the final against Hull. The EFL confirmed that if those two teams do meet, the match would kick off at 3.30pm. If Southampton are reinstated on appeal, the match would be played at the originally scheduled time of 4.30pm.

A league arbitration panel will hear Southampton’s appeal on Wednesday afternoon, with an outcome expected to be announced later in the day or on Thursday.