An NHS worker was confirmed today as Britain's first case of swine flu being transferred within the UK.

Graeme Pacitti, 24, tested positive for the virus after coming into contact with football team-mate Iain Askham, who fell ill after his honeymoon in Mexico.

It comes after it was revealed over 600 possible cases of Swine Flu are being investigated across the UK.

Mr Askham and his new wife Dawn, from Polmont, near Falkirk, were released from hospital yesterday after spending five nights in isolation.

The positive test result was confirmed by the Scottish Government.

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It comes as a further case of the virus was announced by the Department of Health in the North West of England.

The total number of people confirmed in the UK as having swine flu is now 11.

Mr Pacitti, who works as a clerical assistant for the NHS, said he was ''gutted'' and ''disappointed'' on hearing that he tested positive.

He met friend Mr Askham last Thursday and began to show symptoms on Saturday.

Mr Pacitti has been at his Falkirk flat since he was contacted by a doctor and tested.

He said, just minutes after hearing the results: ''I'm gutted really. I just found out.

''I saw Iain last Thursday, he wasn't showing any symptoms then. My friends thought he looked a bit tired but we thought it was just jet-lag.

''I've been feeling a lot better today than I have all week. I've still got an upset stomach and a sore throat. Earlier in the week I was having headaches and feeling feverish.''

Confirmation of the first human-to-human case came minutes after the Scottish Health Secretary Nicola Sturgeon said there were technical problems with the tests that were delaying the results.

Mr Pacitti was initially cleared but continued to show symptoms and further tests confirmed he was suffering from Type A flu.