Nie tłumaczyłbym tego tytułu na polski (może nawet lepiej zostawić w skrocie?).

A Specialist Registrar or SpR is a doctor in the United Kingdom and Republic of Ireland who is receiving advanced training in a specialist field of medicine in order eventually to become a consultant. In surgery, also referred to as Higher Surgical Trainee or HST.
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The SpR grade is set to disappear in 2007 with the full introduction of MMC. Instead, trainees will be referred by their ST level (e.g. ST3). ST3 roughly equates to the first year of SpR training, although standards of experience are now often far wide of this, secondary to the diminution of training at work and the effects of the European Working Time Directive.
http://en.wikipedia.org/wiki/Specialist_registrar

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Note added at 28 mins (2011-03-16 01:59:57 GMT)
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From August 2007, entry into all Specialist Registrar (SpR) training programmes will be closed.
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Fixed Term Specialty Training Appointments (FTSTAs) - at Specialist Training 1 (ST1) and Specialist Training 2 (ST2) level.
http://www.gptopmarks.co.uk/vtsguide5.php