The clinical director of BreastCheck says it'll be months before the screening service is back to normal.
Professor Ann O'Doherty says there are "huge challenges" in resuming services and that it's still not possible to give a timeline of when they'll be back up and running.
Cancer screening has been on hold since March because of the coronavirus pandemic.
Professor O'Doherty says that's had a significant impact.
"We have huge backlogs in the symptomatic service.
"We've looked after patients with urgent symptoms.
"But it's very interesting that even though we've done more urgent clinics than normal, we still have many less cancers in my hospitals than we normally would have in May.
"There are a lot of women out there with lumps who are afraid at the moment, and we're encouraging them to come in.
"But it's going to take some months, and the other thing is for us to do our work now it takes twice as long to do half the work, so we're nothing like as productive as we were in the normal environment."
