Wembley Stadium will launch an internal inquiry into the confusion that has left hundreds of executive club fans waiting for their FA Cup final tickets with two days to go.

Tickets for Manchester United's showdown with Chelsea were scheduled to be sent out on Monday but staff were still working to clear a backlog caused by a computer problem last night.

Around 400 of the 6,000 individuals and companies who have spent up to £10,000 on 10-year licenses that allow them to purchase tickets for matches at Wembley still do not know if they will have access to Saturday's final.