There is a new trial underway for patients whose thyroid cancer is no longer responsive the RAI treatment.
Your oncologist will have to ensure that you fit into the criteria necessary for the trial.
You can be referred to any of the following centres .
Bristol Haematology and Oncology Centre
The Christie, Manchester
Churchill Hospital, Oxford
The Royal Marsden, London
University Hospital Southampton
Royal Surrey County Hospital
The Beatson West of Scotland Cancer Centre
Nottingham University Hospitals
You can read about the trial here