All branches that are opening will do so by Thursday next week.
In a statement, McDonald’s said: “We can today announce that by June 4, 1,020 of our restaurants will have reopened, either for drive-thru or McDelivery.
“This means every Drive Thru in the UK and Ireland will reopen between Tuesday and Thursday next week and we will start to expand the availability of McDelivery too
“This is only possible following the hard work of the teams in our 44 pilot restaurants.
“Over the last fortnight, our employees, franchisees and suppliers have worked tirelessly to implement new procedures to enable safe working so that we can now help all parts of the UK and Ireland to enjoy the return of the Big Mac.