BUS operator McGill's is making changes to its timetables in preparation for the opening of the new Greenock health centre.

From Monday May 17, the 538 Mallard Crescent service will merge with an extended 550 service.

The revamped 550 will continue to serve the Broomhill circular route every 30 minutes.

It will extend to serve Nelson Street and Grieve Road, and will cover the new health centre on Wellington Street.