Roughly just west of Colchester to Haverhill to just south of Cambridge (north of Duxford though) to just south east of Bedford thence roughly to Aylesbury. There'll be a map published nearer the time showing the exact limits. The timescale is in by easter next year, as we all need extra training prior to opening it, and our control room needs to be re-configured to add 2 extra control positions.(The one we're currently using for LARS east is actually funded by and intended for another function altogether)