250 - Sorry I was not very clear, and before TT jumps in, it does reduce the traffic in the Upper Sector. We do it when the Upper Sector TACT indicates an overload in the Upper Sector whilst the middle sector is relatively quiet. It also has a benefit in that we can sort the traffic out onto the correct sides much quicker, also if you are climbing higher the traffic is still coming much too late, often 20nm after the boundary, onto the freq., still on what, by that time, are irrelevant headingsas vertical separation has ben achieved. When busy this is a major irrritant as the worry lurks that there is someone we've overlooked.
Lon