Starts with the southbound train describer and a classic passenger information message at Chorleywood station (oh happy days LOL!). After a brief view inside our train the camera switches to filming out of a side window whilst travelling on the 4 track section south of Moor Park. This is where Metropolitan Line and mainline trains share the fast tracks and local Met. trains use the slow tracks. We see one of the local trains but as its on an 'all stations' service so we pass it as slows to call at a station. Just before the girder bridge at Northwood we briefly see (in the distance) a fast northbound Met. train which will eventually pass us out of sight our train's other side. Further south we catch up with the next southbound 'all stations' train as it accelerates out of North Harrow station, and we parallel it into Harrow On The Hill, where we both make station stops. As we leave we pass a northbound Chesham train which is half way through its 19 minute non-stop express...