The COBIS office is accessible from London Heathrow, London Gatwick and London City airports.
From London Heathrow airport
The Heathrow Express train service will take you from London Heathrow airport directly to London Paddington station. From here, you can take the London Underground Circle Line or the Hammersmith and City Line to King's Cross St Pancras and then change onto the Piccadilly Line for one stop to Russell Square. Alternatively, a taxi from London Paddington should take 10-15 minutes.
From London Gatwick airport
The Gatwick Express train service will take you from London Gatwick airport directly to London Victoria station. From here, you can take the London Underground Victoria Line to King's Cross St Pancras and then change onto the Piccadilly Line for one stop to Russell Square. Alternatively, a taxi from London Victoria should take 20-30 minutes.
From London City airport
London City airport is on the Docklands Light Railway (DLR) which you can take to Canning Town station. From here, you can change onto the London Underground Jubilee Line to Green Park station where you can change onto the Piccadilly Line to Russell Square. Alternatively, a taxi from London City airport should take 45-50 minutes.