| Business | Phone |
| Ontario Worker Adviser Office 495 Richmond St, London N6A 5A9 | (519) 873-4490 |
| Ontario Driver & Vehicle Dept 420 Talbot St, London N6A 2S2 | (519) 438-5016 |
| Information London 355 Wellington St, London N6A 3N7 | (519) 432-2211 |
| Ontario Clean Water Agency 3508 Wonderland Rd S, London N6L 1A7 | (519) 652-7014 |
| Legal Aid 171 Queens Ave #610, London N6A 5J7 | (519) 433-8179 |
| London Special Svc At Home 217 York St, London N6A 5P9 | (519) 438-5111 |
| Ontario Probation & Parole Ofc 231 Dundas St #103, London N6A 1H1 | (519) 661-6631 |
| Ontario Cpri Child & Parent 600 Sanatorium Rd, London N6H 3W7 | (519) 858-2774 |
| Ontario Crown Attorney 80 Dundas St, London N6A 1E7 | (519) 660-3003 |
| Ontario Archaeological Field 55 Centre, London | (519) 675-7742 |
| Ontario Court Reporter 80 Dundas St, London N6A 1E7 | (519) 660-3025 |
| Ontario Correctional Svc Dept 711 Exeter Rd, London N6E 1L3 | (519) 686-1922 |
| Ontario Emergency Measures 80 Dundas St, London N6A 1E7 | (519) 679-7055 |
| Ontario Enforcement Offices 80 Dundas St, London N6A 1E7 | (519) 660-3004 |
| Ontario Economic Development 659 Exeter Rd #200, London N6E 1L3 | (519) 873-4480 |
| Ontario Education 217 York St #207, London N6A 5P9 | (519) 667-1440 |
| Ontario Examination Ctr 659 Exeter Rd, London N6E 1L3 | (519) 873-4300 |
| Ontario Fire Marshall 707 Exeter Rd, London N6E 1L3 | (519) 873-4040 |
| Ontario Enforcement & Vehicle 659 Exeter Rd, London N6E 1L3 | (519) 873-4285 |
| Ontario Emergency Health Svc 205 York St, London N6A 1B1 | (519) 661-1790 |
| Ontario Health & Safety 217 York St, London N6A 5P9 | (519) 439-2210 |
| Ontario Family Court 80 Dundas St #200, London N6A 1E7 | (519) 660-3044 |
| Ontario Health Insurance 217 York St, London N6A 5P9 | (519) 675-6700 |
| Ontario Justice Of The Peace 80 Dundas St #200, London N6A 1E7 | (519) 660-3013 |
| Ontario Health Care Programs 231 Dundas St #201, London N6A 1H1 | (519) 675-7680 |
| Ontario Municipal Affairs 659 Exeter Rd #200, London N6E 1L3 | (519) 873-4020 |
| Ontario Members Of Parliament 841 Wellington St #4, London N6A 3S6 | (519) 668-1104 |
| Ontario Members Of Parliament 650 Waterloo St #101, London N6B 2R4 | (519) 432-7339 |
| Ontario Provincial Police 823 Exeter Rd, London N6E 1W1 | (519) 681-0300 |
| Ontario Members Of Parliament 312 Commissioners Rd W #3, London N6J 1Y3 | (519) 657-3120 |
| Ontario Provincial Police 6355 Westminster Dr, London N6P 1N5 | (519) 652-4100 |
| Ontario Regional Public Health 850 Highbury, London | (519) 455-9310 |
| Ontario Regional Adm Office 150 Dufferin Ave, London N6A 5N6 | (519) 675-7757 |
| Ontario Regional Coroners Ofc 80 Dundas St, London N6A 1E7 | (519) 675-7689 |
| Ontario Retail Sales Tax Dept 130 Dufferin Ave #400, London N6A 6G8 | (519) 433-3901 |
| Ontario Small Claims Court 80 Dundas St, London N6A 1E7 | (519) 660-3000 |
| Ontario Transportation 659 Exeter Rd, London N6E 1L3 | (519) 873-4100 |
| Ontario Superior Court-Justice 80 Dundas St #200, London N6A 1E7 | (519) 660-3026 |
| Ontario Workers Compensation 148 Fullarton St, London N6A 5P3 | (519) 663-2331 |
| Environment & Energy-Ministry 659 Exeter Rd, London N6E 1L3 | (519) 873-5000 |