EQUATOR Network
This is an initiative designed for "Enhancing the QUAlity and Transparency Of health Research". An excellent evolving site with valuable resources for active researchers.
http://www.equator-network.org

Medical Research Council (MRC):
http://www.mrc.ac.uk/index.htm

The Wellcome Trust:
http://www.wellcome.ac.uk/

NIHR Evaluation, Trials and Studies Coordinating Centre
http://www.netscc.ac.uk/

NIHR Health Technology Assessment Programme
http://.hta.ac.uk/

NHS Research Priorities and Needs

Doctoral Research Fellowship (NIHR-DRF) - Offers 3 years full-time funding (or 4 or 5 years part-time) to undertake a PhD and is aimed at individuals, of outstanding potential, early in their research careers. It aims to fast-track them through a customised research training programme in an environment reflecting their individual talents and training needs. It is anticipated that successful applicants would become independent research leaders within 6 to 10 years of completing an NIHR-DRF Award.

Post-Doctoral Fellowship (NIHR-PDF) - Offers 3 years full time funding (or 4 or 5 years part-time) to individuals who are able to demonstrate their potential as researchers but do not, as yet, have sufficient experience to be fully independent. Applicants must show evidence of a clear commitment to a research career in the forms of outputs from doctoral and post-doctoral research, where applicable. Applicants will not have more than 3 years WTE post-doctoral research experience a the time of applying.

Career Development Fellowship (NIHR-CDF) - Offers 3 years full-time funding (or 4 or 5 years part-time) to individuals who have significant and successful post-doctoral experience. Applicants should be able to provide evidence of a clear commitment to a research career, success in the form of outputs from doctoral and post-doctoral research and the likelihood that during a Fellowship they would become fully independent researchers. Applicants will not have more than 7 years WTE post-doctoral research experience at the time of applying.

Senior Research Fellowship (NIHR-SRF) - Offers 5 years funding to undertake a programme of research and is aimed at outstanding individuals who are currently independent researchers and can demonstrate the potential to become academic and research leaders within the duration of an award. An NIHR-SRF is expected to enhance existing career opportunities for both themselves and others in health related research and support the development of collaborative partnerships within and between HEIs and NHS in response to identified health needs.

Further information available at: http://www.nihrtcc.nhs.uk/nihrfellow/