More Canada Post strikes have hit towns and cities around southern Ontario. And this round includes Tillsonburg, Woodstock, Stratford, Strathroy, Port Hope, Orangeville, Milton, Georgetown, Clinton, Wingham and Chatham.

The Canadian Union of Postal Workers says walk off started midnight Wednesday.

London strikers have stopped picketing outside the plant on Highbury Avenue.

The Canadian Union of Postal Workers says 4,500 Canada Post employees joined picket lines in Toronto largest processing centre at 7 p.m. Tuesday.

Canada Post says there is no indication when the strike will end, adding it will worsen backlogs in mail or parcel deliveries across the country.