Another maintenance holiday?

Network Rail's East Midlands' Route Utilisation Strategy makes interesting reading.

Here for instance...

3.1 Train operators
At present, four franchised passenger train operators and six freight train operators runservices over the lines covered by the Route Utilisation Strategy (RUS).

These are: CrossCountry, East Midlands Trains, First Capital Connect, Northern Rail, DB Schenker, Freightliner, First GB Railfreight, Fastline Freight, Colas Rail and Advenza Freight.

Indeed.

But what's this?

No mention of Derby based operator Serco, who run Network Rail's own infrastructure monitoring trains.

Perhaps the New Black Tower has identified another efficiency saving?