In a statement posted on Twitter, Sir Tom, 78, said: "I am so sorry for cancelling last night's show in Chichester, it's the worse feeling having to let down everyone who was coming as well as everyone who is involved in the event". The show will be rescheduled for Sunday 12 August.
The statement read: "It is with regret that we have to cancel Tom Jones' performance at Stansted Park this evening".
"We apologise for any inconvenience this causes and we wish Sir Tom well".
Sir Tom Jones canceled a concert in the United Kingdom after doctors ordered him to rest. The condition is being well managed and we are hoping for a speedy recovery.
Ticket-holders for the Stansted Park gig have been offered a full refund through their point of purchase.
He is also unable to take to the stage at Chester Racecourse on Thursday evening.
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Tom Jones was forced to cancel a gig in the United Kingdom at the last minute due to ill health.
His rep announced: 'Following medical advice, Sir Tom Jones has announced that he will unfortunately be postponing his U.S. tour, which was due to commence in Bethlehem, PA on Wednesday 6th September.
"Tom sends his honest apologies to his fans and looks forward to seeing them again in 2018", a statement said at the time.
Have you been to one of Tom's concerts before?
The singer cancelled his USA tour last September with just five days left on doctor's orders following a hip replacement.