You can book a taxi via following methods:
Online: http://www.taxisnaps.co.uk/
Telephone: +44 121 647 3588
Email: info@taxisnaps.co.uk
Yes, it's possible to pre-book a taxi with Taxisnaps - Taxi Photo Booths, please contact the company.
Taxisnaps - Taxi Photo Booths 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.