MRI waiting time

You need to follow this up. Do you have a breast care nurse? If so, start there. If not have you been allocated a surgeon? If so, call her office and speak to her/his PA. In any event it is time to get in touch with them not wait for them to contact you. Things can fall between the cracks! It happened to me several times during the course of my treatment. It's fine for you to ask questions of your team.

Kaf56 thank you for your reply I have contacted them just before new years and they told me they are behind because of all the referrals they have coming in 

Time to call them again then. Ask whether your case will be discussed at the next MDT meeting, and which day it is if you don't already know. Then call them again the day after the MDT meeting for an update. Honestly, I have every admiration for the NHS and what they do for us, but "the squeaky wheel gets the oil".