First York is adding more journeys on its services from Sunday 28 June to cater for an increase in travel.
The enhancements are being made to help manage continued capacity restrictions on buses due to social distancing as further lockdown measures are eased.
For the number 4, the frequency of buses increases to every 8/9 minutes during the day Monday to Friday and every 12 minutes on a Saturday
For the number 12, buses are restored to every 30 minutes between 9am and 5pm on Saturdays.
Full details of the changes and timetables can be found on the First website