Are professional body certificates any helpful in getting into academia (if I don't have any undergraduate education)?
Usually, these topics are discussed on a case-by-case basis. For example, the professional institute can have some kind of agreement or understanding with some universities, but not with others. The best you can do is to choose a research program that you want to join, prepare your record (including professional diplomas) and ask the faculty that rules the program.

Some universities may accept you without conditions, but I guess the most common case will be that you will have to take some extra courses in their program and get the corresponding credit in order to fit your profile and knowledge to their exact expectation.