This Finpip overview summarizes CMC Markets as commonly marketed to retail traders (founded 1989; HQ: London, United Kingdom). Typical platforms include Next Generation platform, MetaTrader 4.
Regulatory snapshot (not legal advice): FCA; ASIC; MAS; BaFin; FMA; IIROC (Canada); check local entity
Official website: https://www.cmcmarkets.com/. Confirm licence numbers, product availability, and costs there before funding an account.