From Melksham to Swindon to watch Swindon Town play.
From Chippenham to Salisbury (I think that's another soccer run)
From Frome to Swindon for work
From Swindon to Salisbury
From London to Melksham to attend a Well House Consultants course
From Trowbridge to Chippenham to go to the county archive office (a future journey!)
From Melksham to Bristol

It's not JUST the Swindon commuter traffic!  The majority of passengers are on trains OTHER that the 07:45 departure and 18:09 arrivals.

Tricky one, as the ticket sales figure sources to my knowledge are only kept centrally as "sales from" and "sales to".  By journey ... let alone "journey route a" v "journey route b". are really tough.

Ticket sales figures - also - are only for tickets sold to and from.   They don't include season tickets actual journeys made (but rather a notional figure), Britrail passes (such as that great couple from New Zealand we met at the station), rail staff and families travelling on passes (but I'm nor sure how common these are these days), and schoolkids hiding in the loos to avoid the ticket collector.  More significantly, they do not include users of substitute buses who have offered to pay the driver but he can't take the fare and there's no-one else to do so.  "We say the journey is free" said one driver to me.  No, it isn't free - it produced distorted statistics which can lead to the killing of a service.

No easy solution to the stats, ... but if you have any specific question(s) that you would like asked on the TransWilts train, please let me know.  "From" and "To" is already on the list, together with journey frequency and "what were your alternitves to using this train".