I greatly applaud your initiative to encourage the development of green corridors along England's railways.
The propagation of your idea by means of a 'Railway Garden Competition' is stunning in its simplicity.
The fronds of buddleia that I see adorning the previously dull brick built bridges and viaducts whenever I visit the UK shows the extent to which the management of Network Rail are giving your 'bottom up' initiative their wholehearted support.
However, it is only fair to point out that Network Rail's efforts are still at the nursery garden stage compared to the achievements of my colleagues on Poland's railways.
I enclose a picture I took earlier today of a Prussian goods van at Kalisz station.
I trust that you will be able to use this picture to encourage Network Rail's gardeners to even greater efforts.
Alas foreign railways are not currently able to enter the Railway Garden Competition. Although Eye understand that this is to be addressed as part of the EU's Fourth European Railway Package...