This was quietly abandoned by the UK Government early in 2001.  Many people believe it was a clear commitment to 'service' which the NHS Guide does not satisfactorily or fully replace but that as it represented undeliverable standards the Government had to cancel it.  

For cancer patients, and those with rare cancers in particular, the 'right' to a second opinion is no longer a specific commitment. It remains, however, at the discretion of a clinician or your GP. <b>You can request a second opinion and this request should not be unreasonably refused.</b> The complaint procedure which can be actioned if it is refused and you are not happy with the reasons given is detailed in the &&url. The NHS offers an on-screen interactive guide to treatment and care which details the NHS's responsibilities and commitments to its patients.
