The appeal hearing took place in London on Thursday. But the Rugby Football Union announced later that day that a three-man panel chaired by Gareth Rees QC will now consider its decision, which will be "communicated in due course".
London Welsh appealed a panel of inquiry's decision earlier this month to deduct them five league points, issue a fine and impose a further five-point deduction suspended until the end of next season.
The punishment was handed out for fielding an ineligible player - scrum-half Tyson Keats - in 10 Premiership games this season. The points deduction sent London Welsh bottom of the Premiership, two points behind Sale Sharks with five games left.
Mike Scott, the former London Welsh team manager, has been banned for life from rugby after he admitted supplying false information regarding Keats, including a forged passport, to the RFU.
Keats was eligible for an ancestry visa, due to his grandfather being born in England, but Scott made a mistake in the original application.
Instead of reapplying, Scott told Keats' agent and the club that the visa had been successfully granted to the player.
Meanwhile, Scott submitted false documents to the RFU in a bid to pass Keats off as English-qualified. Scott accepted a police caution on February 14 for his actions in falsifying registration documents.
London Welsh, though, argued they should not be blamed for fraudulent behaviour conducted by Scott, who was described in the original judgement as a "rogue employee".
The club resume Premiership action on Saturday with an away game against Gloucester.