You can book a taxi via following methods:
Online: http://www.travelskyline.co.uk/
Telephone: +44 144 224 1111
Telephone: +44 779 932 3204
Yes, it's possible to pre-book a taxi with Skyline Taxis And Minibuses, please contact the company.
Skyline Taxis And Minibuses 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.