BA has teamed up with Computer Cab, which has allocated a fleet of 3,000 cabs, and the bill is likely to run to several millions of pounds. A typical Boeing 747 has 85 seats in the business and first class cabins. A typical one-way black cab fare to the City from Heathrow, a 17-mile journey, is £65 and to Sevenoaks, or 52 miles, it is £116.