Hi Midocean,
We all keep a careful check when issuing new descent/climb clearances that the previous standing agreement will be maintained...usually the most problems are when BB are landing on 15 and the pilots like to waffle down at 500fpm !
IMHO, Capital is a waste of time...it was only ever brought in as a NERC political project and to a lesser (but more important operationally) degree with RVSM coming in, LUS would have had far too many levels and it was necessary to move LMS upwards
If we have time we will get FL210 (not 220 !!) from Capital and hand you straight to LMS. But on Midlands we frequently run without a coordinator so it is easier when busy just to transfer you to Capital.
Cheers
Expedite