The UK Community Advisory Board, a network for community HIV treatment advocates, has launched a survey hoping to build a picture of treatment for 28,000 people living with the virus in London.
In April the London Specialist Commissioning Group changed rules on treatment regimens in order to tackle rising costs, the UKCAB said.
The group says the move may be taken up in other regions in England, and potentially in Scotland and Wales.
In a statement, the organisation said: “In response to these changes, and to get a clearer picture of how they are impacting people living with HIV, the UKCAB is undertaking a study of patients who have seen changes to their drug regimen since April, and of the experiences of people accessing HIV drugs from London HIV clinics.
“The survey will be available online for the next few months, and the information that we obtain from the data will be used to help UKCAB produce a report on how the new regime is affecting people living with HIV, positively or negatively.”
The survey can be accessed at the SurveyMonkey website, and is open to people living with HIV and receiving treatment in London.