KGH says it is suffering significant problems with its IT system and telephone network.
A number of hospital trusts across the country are reporting problems after an alleged cyber attack, but it is not yet known whether the attack is causing KGH’s problems.
A KGH statement said: “We’re currently experiencing significant problems with our IT and telephone network which we’re trying to resolve as soon as possible.
“This means that people will have difficulty phoning us for the time being – please bear with us.
“We apologies for any inconvenience caused.”