An interesting if slightly late-coming post. a.k.a DFR to the rescue!

 Set the scene, a cold evening in January. The phone rings. It's Rob. "Whats your worst nightmare?" Having promptly listed about 8 worst nightmares, none of them being why he's calling, we get to the bottom of it.
Apparently the GM had received a call from DB Schenker. They had a crippled wagon in the middle of a train and it needed to be shunted out for repair. Running it along the mainline was a no-go so they have asked us if they could use the sidings and run-round loop at the junction via our mainline connection.

In theory this shouldn't pose an issue as we have had many a vehicle over it in the past, the heaviest being a diesel drag to pick up an engine from Dean Forest Diesels. However this will be the heaviest for a while and he wanted a couple of guys on the ground to watch things going through. The last thing we want to be learning to do is re-railing a 66! Step forward Sam and I, with our cameras naturally! Pictures below by E. Dyer.

 The groundframe is unlocked from Cardiff panel and the access from the loop is granted.

 In comes 66006 with the tankers.

 Crossing the pointwork dead slow.

 The wheel skate under the crippled wagon.

 Wagons in the entirety of the loop, while the 66 crosses the road into the headshunt.

 New delivery for the mess room! We are running low...

  

View from the box. 66 waits for the crossing.

And over we go.

Waiting for the crossing.

 Running back from the headshunt into the platform road.

the siding off the left is the connection to Dean Forest Diesels

Half the trains shunted out onto the loop, the crippled wagon is on the end. It was then

shunted back into the siding used by NR for their tampers etc. 

The train was then remade and went on its way.

Definitely an interesting couple of hours which passed off without a hitch, and not something you see everyday. The crippled wagon was left in the siding at the junction until DB arrived with a monstrous crane and a spare bogie to replace the one with the 100mm flats... This occurred about a week later and sadly nobody caught it on camera. 

Still once again our mainline connection proving its worth, and building bridges with the 'Big Railway' is never to be sniffed at.