As I went past on the train today they were installing new metal fences (about 12ft tall) near the train line. The fence is metal metal chain-link (the newer heavy duty design) and has vertical wire running accross the top 4ft section (doesn't look to be electrocuted or razor wire). They are also installing large amounts of portable pedestrian barrier the other side.

In this a coincidence? It may be part of the ongoing works at the power station and part of the completion of new train station placed next to power station (East Midlands Parkway). After climate camp went to Drax they installed new fences at a cost of £3-£4Million (source - tour guide at Drax power station).