The Milton Keynes Central train station is served by Virgin Trains inter-city services and by London Midland local services. This station is very easy to navigate with a whole flock of taxis waiting outside ready to take you where you need to go. They also have a ton of bus stops here for travel. Outside the station are all sorts of convenience stores, hotels and there is even a skateboarding park just about a block away. It’s very convenient to walk to from my company apartment(about a 15 minute walk) so was super convenient during my time in MK to get to London.