Meet and greet will almost certainly be more costly than a normal cab and potentially take longer too.

You can normally add at least a £10 to £15 supplement for meet and greet plus parking fees and possibly waiting time beyond the first 30 minutes. Effectively the meet and greet fees alone would be fairly similar to the black cab price and then you would have a fare on top.

From the central area (T1 and 3) a black cab is a no brainer as the distance is very short. From T5 the journey is a little longer. T4 is probably the most expensive journey.