You can book a taxi via following methods:
Online: http://www.metroexpress.cab/
Telephone: +44 208 888 5555, +44 208 888 9999
Email: [email protected]
Yes, it's possible to pre-book a taxi with Metro Express, please contact the company.
Metro Express has both regular and air-conditioned taxis, please mention your preference at the time of booking.
Please contact the company on their helpline number to make any changes.
Generally drivers will meet the passengers at the arrivals on airport pick ups but do check with the company.