Great advice i will definitely give the ABA a call.

It was actually my 35yo female boss who suggested I go home to express (she has 4 kids but couldn't BF) .... I am very lucky I know.... I'm as likely as anyone to stress about the time it takes, feeling like I'm being a problem or whatever kwim? So with that in mind it will be good to know what my rights are, if we can sort that out ahead of time I will feel better

Will let you know when I find out!