It's used to transfer main line registered rolling stock between the NNR and the national network, and very occasionally by charter trains. I believe there is a limit on the number of occasions per year it can be used.
As of next year, the NNR plan to run summer dining trains across the road and on to Cromer. I think the long-term dream is for NR to reinstate the third side of the triangular junction just south of Cromer so that they can run from Sheringham through to Norwich without having to reverse at Cromer, though finding paths and a platform to terminate in (to say nothing of the lack of run-round facilities at Norwich) might be further obstacles. Of course, for those who don't know, the crossing in Sheringham was only reinstated a few years back. In period, the current NR station on the eastern side of the road didn't exist - the NNR site was the station.
For years after BR put up the current Bittern Line station, the link was severed and visiting NNR locos had to arrive via. road haulage, which, given the road situation in the area, was pretty awkward to say the least. The following link to a BBC News slideshow shows photos from the reopening in March 2010 when BR Standard 7P 70013 "Oliver Cromwell" hauled a service across the road for the first time since the 1960s.
http://news.bbc.co.uk/local/norfolk/hi/people_and_places/history/newsid_8563000/8563399.stm
Last edited: