The Royal Marsden, treating soft-tissue sarcomas, and University College Hospital and Royal National Orthopaedic Hospital, treating both bone and soft-tissue sarcomas , form the London and South East Sarcoma Network. They have recently published detailed guidelines for treatment and follow-up procedures.
They show what should happen, in detail, for each sarcoma subtype and these guidelines are worth reading.
This will give you the information you need to see how your treatment should progress in any hospital, not just the three author hospitals.
The guidelines can be downloaded at http://www.lsesn.nhs.uk/guidelines.html.
 Description taken from London and South East Sarcoma Network home page.