AEGIS : Good international AIDS information site (from treatment to political), with links to the latest news from a variety of agencies

African HIV Policy Network (AHPN) : Umbrella organisation for African community groups addressing HIV & sexual health

AIDS2008 : Information on the 17th International AIDS Conference held in Mexico City in August, 2008

AIDS2010 : Information on the 18th International AIDS Conference held in Vienna in July, 2010

AIDS2012 : Information on the 19th International AIDS Conference to be held in Washington DC in July, 2012

Aids Action Europe : Network of community based organisations fighting against AIDS in Europe and Central Asia

AIDS.ORG : Mainly treatment information, for health professionals and people affected by HIV/AIDS

AIDSmap : Comprehensive site from the National AIDS Manual, particularly useful for people living with HIV and AIDS. Plus database of AIDS organisations worldwide, and information for developing countries from the International HIV/AIDS Alliance

All Party Parliamentary Group on HIV and AIDS : Backbench group of MPs and Peers in UK Parliament

Association Francois-Xavier Bagnoud : Specialises in paediatric HIV/AIDS and human rights, especially children's

AVERT : Charity dealing with health education and research, provides good information on its website, including for young people

Bandolier : An online newsletter on evidence-based medicine

The Body : Good general guide to HIV and AIDS

British Association for Sexual Health and HIV (BASHH) : Leading professional representative body for those practicing sexual health including the management of STIs and HIV in the UK

British HIV Association (BHIVA) : Leadng UK professional association representing professionals in HIV care

British Medical Association (BMA) : The doctors' trade union. Site includes publications on medical ethics and scientific issues as well as BMA policy and member services

British Psychological Society Faculty for Sexual Health & HIV : Forum for psychologists, and other professionals working in the area of sexual health and HIV

Canadian HIV/AIDS Legal Network : Policy research and reports on legal, ethical and human rights issues

Care Quality Commission : The health and social care regulator for England

Centers for Disease Control and Prevention (CDC) : US lead federal agency for disease prevention and health promotion

Centre for HIV & Sexual Health : Organisation dealing with health promotion and training. Produces SHINE magazine (Sexual Health Information News Exchange)

Charities Aid Foundation (CAF) : Information for and about the non-profit world

Children's HIV Association of UK and Ireland (CHIVA) : An association of professionals who are committed to providing excellence in the care of children infected or affected by HIV and their families

Department of Health : Sexual health section of large government website. See also main site Department of Health which includes details of government publications and NHS circulars

Department for International Development (DFID) : UK government department, "working to promote sustainable development and eliminate poverty"

Dieticians in HIV/AIDS : Registered dieticians who specialise or have an interest in HIV/AIDS

Division of HIV/AIDS (DHAP) - MMWR Reports on HIV/AIDS : Mainly epidemiological reports from the USA

Drug donations website : Site developed by NGO consortium, offering information and guidelines about donation of medicines to developing countries and Central and Eastern Europe

eForums : International, regional, national and issue-based email discussion forums for information-sharing and debate on HIV, health and development

Essential Drugs and other Medicines (EDM) : The WHO's Action Programme on Essential Drugs, providing key drugs (including those for) to developing countries

General Medical Council (GMC) : Regulatory body for UK medical profession ("protecting patients, guiding doctors"). Site includes guidance on standards of practice

George House Trust : Charity supporting people affected by HIV in North West England

GLADD (Gay and Lesbian Association of Doctors and Dentists) : Provides professional and social support for gay, lesbian and bisexual doctors, dentists, medical and dental students

GNP+ : The Global Network of People Living with HIV and AIDS

Greater Manchester Sexual Health Network : Local sexual health network

GUNA : Genito Urinary Nurses Association

Healthlink Worldwide : Excellent resource base for people working in developing countries

Health Protection Agency : HIV/AIDS, STI and other infectious disease surveillance, regular statistics on numbers of reported HIV and AIDS cases, other STIs, anonymous HIV prevalence surveys, and GUM waiting times audit

Herpes Viruses Association : Charity providing information and advice to people affected by herpes simplex and other herpes viruses

HIVPA : HIV Pharmacy Association

HIV/AIDS Policy Compendium : A collection of international policies and laws including national strategies and programme plans, from the Futures Group

HIV i-base : HIV treatment information for healthcare professionals and HIV positive people

HIVInsite : A general information site run by leading HIV/AIDS specialists at the University of California in San Francisco. Good, but very US-oriented

House of Parliament Home Page : Includes searchable Hansard

IAPAC (International Association of Physicians in AIDS Care) : General site with a clinical focus; includes Human Rights section to honour Jonathan Mann

ICASO : International Council of AIDS Service Organizations

ICW : The International Community of Women Living with HIV and AIDS

Independent Advisory Group on Sexual Health and HIV : Monitors progress and advises government on implementation of the sexual health and HIV strategy for England

Infectious Disease Research Network (IDRN) : Forum for ID researchers to collaborate, with funding and training bulletins, researchers database, and other useful resources

International AIDS Economics Network (IAEN) : Provides access to materials on HIV/AIDS from the World Bank, UNAIDS, USAID, European Commission and IAEN

International AIDS Society : Professional society for those engaged in HIV/AIDS prevention, control and care, which organises international AIDS conferences

John Hopkins University AIDS Service : Designed for care providers, includes bi-monthly newsletter The Hopkins HIV Report

The King's Fund : Leading independent health charity with London focus, strong on health policy

Medical Research Council : Government funded research agency

Medscape : The HIV/AIDS section of a reputable medical site, often has accounts of the latest research

NANCSH : National Association of Nurses for Contraception and Sexual Health

National AIDS Treatment Advocacy Project (USA) : USA-based site providing treatment information for professionals and people with HIV

National AIDS Trust : Charity which develops policies and campaigns on HIV

National Institute for Health and Clinical Excellence (NICE) : Provides national guidance on promotion of good health, and prevention and treatment of ill health. Now incorporates functions of previous Health Development Agency

National Institute of Allergy and Infectious Diseases (NIAID) : Provides an overview of HIV-specific research, programmes and publications of the National Institute of Health (NIH) in the USA

NHIVNA : National HIV Nurses Association

NHS Direct Online : A gateway site to health information on the net

Positively UK: Charity working to improve the quality of life for people affected by HIV

ProCAARE : Email list focusing on HIV/AIDS epidemiology and treatment, intended mainly for developing countries

Public Health Observatories : Regional network of centres for publichealth development

Roche HIV : Roche HIV treatment developments and updates for physicians

Royal College of General Practitioners : The voice of GPs on education, training and standards

Royal College of Physicians : HIV testing guidelines for general medical services now available online. See also Royal College of Physicians (London) and Royal College of Physicians (Edinburgh) : responsible for education, setting standards, and examinations for specialists in general medicine

Royal College of Obstetricians and Gynaecologists : Responsible for education, setting standards, and examinations for specialists in obstetrics and gynaecology

Royal Society of Medicine : Provides accredited courses for continuing professional development for doctors and other healthcare professionals in the UK

SatelLife : Organisation using satellite and internet technology to provide information for health professionals in developing countries

Sex Education Forum : Authority on sex and relationships education, based at the National Children's Bureau

Sex Worth Talking About : A site for young people that provides clear up-to-date information on sexual health issues

South West London HIV & GUM Clinical Services Network (SWAGNET) : Local HIV and GUM network

SSHA : Society of Sexual Health Advisers

Terrence Higgins Trust : Major charity providing services to people affected by HIV, and health promotion

UK CAB (Community Advisory Board): Email discussion group open to HIV-positive people and community organisations

UK Consortium on AIDS and International Development : A group of UK based organisations working together to understand and develop effective approaches to the problems created by the HIV epidemic in developing countries

The UK Health Centre : A gateway which aims to provide links to all UK health-related sites for the public and professionals

UNAIDS : Homepage of the United Nations HIV/AIDS programme

United Nations Development Programme (UNDP) : Includes information on UNDP role on AIDS and reports highlighting links between HIV and development

The University of York Centre for Health Economics : A research institution which specialises in health economics

Wellcome Trust Online : Information from the world's largest medical research charity

WHO : The World Health Organization

worldAIDSday.org : Website by the National AIDS Trust on this year's World AIDS Campaign and events in the UK

World Bank : Intergovernmental body providing loans and other assistance to reduce poverty in the developing world, including tackling HIV and AIDS

If you are worried about your own health or that of a friend or relative, you could also ring the confidential National Sexual Health Helpline 0800 567 123 (24 hours) or THT Direct Helpline 0808 802 1221 (Mon-Fri 10am-10pm, Sat-Sun 12-6pm).