Recruitment to train in Clinical Radiology within HEENW is at ST1 and is part of a nationally co-ordinated process. Information about eligibility and the application process can be found here.
There are approximately 20 ST1 vacancies in August each year. Each training programme (Mersey and North West) recruits separately.
If you are thinking of training in Clinical Radiology make sure you know what the work of a radiologist involves by talking to consultants and trainees in the hospital where you work and doing a "taster period" in a radiology department. Look carefully at the person specification (2014 example) before you apply.