The number of people in the UK identified as having swine flu rose to 1,462 today after 141 new cases were confirmed in England and a ninth case was confirmed in Northern Ireland.

The 141 new cases in England were all patients previously suspected as having the virus, the Health Protection Agency said.

Northern Ireland's director for public health, Dr Carolyn Harper, said it was seeing a similar pattern to other places and people "should not be alarmed" by the latest case, which related to travel outside the UK and did not involve a school, workplace or other setting in Northern Ireland. The sufferer has mild symptoms and is at home and taking anti-viral treatment, the Public Health Agency (PHA) said.

The PHA said the other eight cases in Northern Ireland either had recovered or were doing well. Another six possible cases are under investigation.

More than half of the cases in England are in the West Midlands, which has 512, including 124 of the new cases. There are 498 people with swine flu in Scotland, compared with 952 in England and three in Wales.

Sandhurst, the military college, confirmed today that one of its workers had been diagnosed with the virus on Friday. A spokesman said that, while other people had suffered common colds and normal flu, no other cases of the disease had yet been discovered.

"He works in the stores with very little contact with cadets and has been isolated and sent home," the spokesman said.

Jacqui Fleming, 38, from Carnwadric in south Glasgow, was named yesterday as the first swine flu patient in the UK – and the first outside the Americas – to have died since the H1N1 virus first emerged in Mexico more than three months ago.

Ms Fleming had underlying health problems and died in intensive care at the Royal Alexandra hospital in Paisley on Sunday, two weeks after giving birth prematurely to her third child. Her son Jack died yesterday. The cause of death was not swine flu.