||The Advisory Group provides support for the development of NRPB advice on non-ionising radiation. It was set up by the Director of NRPB in 1990 with terms of reference: “to review work on the biological effects of non-ionising radiation relevant to human health and to advise on research priorities”. The present report is the first by the Advisory Group to have comprehensively addressed scientific research related to concerns about exposures to RF fields. The Advisory Group considered that this report should cover sources of RF exposure as well as experimental and epidemiological studies relevant to concerns about human health. The RF fields to wich people may be exposed from a variety a variety of devices cover a wide range with very variable signal characteristics and these are considered. The report is limited, however, to radiation effects, and does not consider other aspects of mobile phone or other RF device use.