I've been training a delegate who lives in Bristol and works in Melksham.    He would prefer to use the train to get here daily, but due to the lack of suitable serviced he has to drive.

So that's a loss of one regular traveller all the way from Bristol to Melksham is it?   No - it's a loss of FOUR regular travellers.   He has three colleagues who do exactly the same thing, and would also prefer to "let the train take the strain".