From www.theyworkforyou.com two written answers of interest.

Greg Knight (East Yorkshire, Conservative) | Hansard source

To ask the Secretary of State for Health what estimate he has made of the average annual cost to the NHS of treating a HIV positive patient with antiretroviral medication.

Dawn Primarolo (Minister of State (Public Health), Department of Health; Bristol South, Labour) | Hansard source

The estimated annual treatment costs to the national health service for a patient with HIV vary according to the severity of the disease. The estimated average annual costs to the NHS of treating an HIV positive patient with combination antiretroviral drugs is £14,000.

Number of people with AIDS (though think this should be HIV/AIDS)

Greg Knight (East Yorkshire, Conservative) | Hansard source

To ask the Secretary of State for Health what estimate his Department has made of the number of people with acquired immune deficiency syndrome in England.

Dawn Primarolo (Minister of State (Public Health), Department of Health; Bristol South, Labour) | Hansard source

There were 11,529 individuals reported as ever having been diagnosed with AIDS who were resident in England and who had accessed HIV-related care in the United Kingdom in 2007. Most of these will have been diagnosed with AIDS before 2007 and will have received treatment to enable reconstitution of their immune systems so that they are no longer at high risk of developing a further AIDS-defining illness.