you seem quite interested on the chances that IMGs get into specialist/college training programs, and whether or not there is a law that automatically discriminates IMGs compared to local doctors. as we said before, there is none, and as long as you have general registration and PR, you can apply for most.
i think rather than focussing on specialist training , try to focus first on finding a job, to get provisional medical registration in the first place via the standard or competent authority pathway- this is the rate limiting step and the first job is always the hardest to get especially for standard pathway doctors. if you perform well, general registration will be granted to you with time. similarly, IMGs who are already in the system do eventually get onto specialist training, some specialties more than others
just because IMGs fit the minimum eligibility criteria doesn't mean that you are on the same level as a local applicant (and vice versa) .college training is competetive - most colleges require minimum training and clinical experiences in certain departments , completing primary exams and references from consultants. we cannot speculate on IMG discrimination as it certainly not law, so you really need to see the individual college training criteria for information on what makes an applicant competitive
Another big factor why IMGs are under-represented in certain specialties is that many are much older than their local counterparts and dont have the luxury of time to train - hence many go into general practice training which enables job stability and good remuneration. consultant jobs in the hospital are rare compared to an abundance of GP jobs.
of course, many imgs who are determined and have their minds set do get specialist training - many consultants coming out now will be of IMG background . and even if you dont get in to specialist training, general reg is more than enough to work as an RMO, and you will still be employed - think of specialist training as a matter of time thing if you are determined