Travel in safety with the largest supplier of licensed taxis in Central London. Booking a taxi on the Dial-a-Cab is quick and easy: ♦ Enter your personal details one time only. ♦ Use GPS to pick you up from your current location, or search for your address. ♦ Specify a destination address or choose "As Directed". ♦ Select a date and time. ♦ Book your taxi!