Amber 261 is being withdrawn from 16th December, which will cut Doddinghurst and Blackmore off from Brentwood.
If there's no replacement, then Doddinghurst will have just a couple of buses a day on route 898. Blackmore fares a little better in that it has a direct link to Chelmsford with Stephenson's 32.
We'll let you if there is to be any replacement for the 261.