As an personal rule of thumb:
If you are in the UK;
and you mostly go to one city in a day for business;
and you are either based in London or go from a city to London;
then the train is quicker (taking into account the weather risk, general difficulties with places to land in London area, etc).
If you go to several places in a day and have places to land (your factory grounds);
or you go to places other than on main rail routes;
then there may be some benefit if 'time is of the essence'.
However, the cost of time has to be weighed up against the cost of the machine (say £35K/ year for maintenance on a twin Sq plus pilot costs plus mortgage and asset finance and unexpecteds) -v- hiring more staff.
Suits absolute experts (jockies/ racing drivers/ top lawyers/ anybody who charges big rates by the hour [!!!!! - which reminds me of a funny story of a heli flight to Monaco once...] but rarely will actually pay in the UK context.
All IMHO (and financial analysis)
h-r
Looking back, that was almost in COBOL was'nt it?
