Hi all, are there any rail ticketing websites allowing to search only non-stop trains? (it will be useful for me to show only non-stop trains from Bournemouth to Poole / Southampton on a certain day such that stopping trains don't clutter the search result)
For Bournemouth-Poole, searching for journeys which avoid Pokesdown would work, as the web sites don't realise when trains pass through the station. There's no equivalent for Bournemouth-Southampton, however, as they do notice trains which pass through Brockenhurst. Redbridge too, for that matter.
It's a long time since I worked in IT, but put as baldly as this there would be lots of opportunities for users to put in what you and I know are silly requests (show me all the trains from Liverpool Central to Southport that don't stop anywhere else, show me all the trains from Bournemouth to Waterloo with a journey time of under five minutes) and then complain that they got a silly answer.
There are already lots of ways to put silly requests into these sites (Bournemouth-Redbridge direct is one of the ones SWR lets you ask for). It helps that they have a telesales line, as frustrated customers can speak to someone who can try to manage their expectations and meet their needs.
I don't know if any of the suggestions would be helpful, though. Someone might request non-stop trains in the hope of seeing the fastest ones, when they're not always the same thing.