Hi rjb, I'm a NHS state registered biomedical scientist, specialising in histology. If you wish to work in the biomedical labs you MUST have state registration; this is a laborious process of speaking to the institute of biomedical science (who generally are better at screwing up than not), obtaining a relevant degree (BSc from an approved institution, which is not necessarily the better institution) and completing a registration portfolio. All told, this can take up to three years, during which you will be paid approx £15,000 pa. However, if your degree is acceptable to the IBMS, you just do the portfolio.