a little earlier on bbc breakfast, my colleagues ben thompson and rachel burden spoke to david sidebottom big changes are 1000 additional services per week, which is good, more frequency for passengers, better chance of getting a seat on an already busy train. some services are going to be quicker, you know, better investment in infrastructure, better signalling and tracks and more reliable and quicker. should is the key word, it is about delivery, now. does itjust happen overnight, this timetable change, or is it a gradual introduction? pretty much overnight. today is the switch on for this. but, actually, monday is the real test, when we all go back to work, the commuters. we will see a couple of days of a bit of uncertainty, things will settle down a bit. the staff at the railway have got to get used to this as well, being in the right place at the right time. give it 48 hours or so and that will be the test if it's working. from a sort of outsider‘s point of view, we will look at this and think it is just a slight change of a few minutes, one way or the other, but actually, this is a