Third day in a row I believe there have been early morning mainline issues?
Whilst today is a Unit or possible OHL fault, not sure a fatality can be blamed for íssues? os for OHL this is the 1st OHL trouble at Colchester for many years !
If they can run via the Goods Line, then it will be one train each way, and any IC service will not be able to call at Colchester, as has been said a maximum 8 car EMU, depending on the Isolation and bock needed, will dictate whether they can go back Up Main at the London end Junction or haveto go bi-di to Marks Tey/Kelevdeon
edit..lookslike they can shorten the isolation to part of the station as far as the L/E junction, which will haelp running via the goods, still only one train at a time L/E Junction to C/S Platform 1 tho