Tim Hortons – Sarnia – London Line Fast food restaurant. Contact Info Phone: 519-542-6800 Fax: 519-542-5324 Location 1707 London Line Sarnia, ON N7W 1B2 View Map Year Established: 2000 P/T Employees: 14 F/T Employees: 20 Key Contact: -- NAICS Code: 72221 - Limited-Service Restaurants Site Selector Map: View location