If you wish to change or extend your scope of clinical practice, or return to a previous area of clinical practice you may need to demonstrate that you are up to date in that field on re-entry. You should liaise with your employer and appraiser. Depending on the length of time you were away, your employer may advise you to undertake some re-training and/or supervised practice.
The Academy of Medical Royal College's has produced Return to Practice Guidance.