London, Canada Doesn't Exist—But London, England Has 8.9 Million People

There is no city called "London, Canada." You're likely thinking of:

• London, Ontario – Population ~422,000 (2021 census). "Forest City," university hub, 200 km SW of Toronto.
• London, England (UK) – Population ~8.9 million (Greater London, 2023 est.). Global financial/cultural capital.

If you meant London, Ontario: it's in southwestern Ontario, home to Western University and Fanshawe College, with a thriving arts scene and the annual Home County Music & Art Festival.