You can book a taxi via following methods:
Online: http://samtaxi.co.uk
Telephone: +44 208 595 1515
Telephone: +44 755 454 4419
Email: sams-taxi@hotmail.com
Yes, it's possible to pre-book a taxi with Sam's Taxi Essex, please contact the company.
Sam's Taxi Essex 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.