Buses between Bedford and Kettering - other TOCs allowing EMT tickets?

[tannedfrog]

Buses replace trains between Bedford and Kettering on Sunday 21 September 2014
Train companies affected
East Midlands Trains
Routes affected
Between London St Pancras International and Derby / Nottingham / Sheffield also between Corby and Kettering
Description
Engineering work is taking place between Bedford and Kettering closing all lines.
Buses replace trains between Bedford, Wellingborough and Kettering and also between Kettering and Corby.
Planning your Journey
For full details of these changes and the impact on your journey, please use the National Rail Enquiries

Should it be taken from the above that there is no agreement in place for other TOCs eg East Coast to accept passengers holding Midland Mainline-routed tickets to London?

 

[jopsuk]

Bit late, but yes. Ticket acceptance on alternative, normally non-permitted, routes is usually only for emergency closures. Where it is engineering works announced well in advance it is assumed passengers will plan around them.