NEW : Protesters occupy part of BBC building in Gaza , group says . Scotland charity group BBC to launch appeal for U.K. aid . Disasters Emergency Committee refuses to broadcast ad , says would compromise appearance of impartiality . BBC , funded by obligatory license fee , is required by charter to be impartial .
NEW : Protesters occupy part of BBC building in Scotland , group says . U.K. charity group Disasters Emergency Committee to launch appeal for Gaza aid . BBC refuses to broadcast ad , says would compromise appearance of impartiality . BBC , funded by obligatory license fee , is required by charter to be impartial .