The Sony PMW F-3 has been approved by the BBC for HD acquisition, provided you use a 50Mb/s or higher external recorder. Also on the approved list, provided you use an external recorder are the EX1, EX1R, EX3, PMW-320 and PMW-350. The PMW-500 and PDW-700 and F800 can of course also be used stand alone. The full list can be downloaded here.