A joint venture agreement signed last year between Costa and Russian restaurant group Rosinter will result in the firms investing $10m in the venture and opening 200 Costa outlets in Russia in the next five years.

Competition comes from rival Starbucks, which opened its first Russian cafe north-west of Moscow last year, and McDonald’s, which has opened a chain of McCafes.

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Costa is the UK’s biggest coffee chain, with 700 branches, and has expanded globally with 180 outlets in the Middle East and 40 in India.