In a Written Ministerial Statement of 6th September the Lord Chancellor said he would legislate as soon as parliamentary time allows to remove the legal restrictions on filming in court.
There will be further consultation and, according to Kenneth Clarke, offenders will not be given "opportunities for theatrical public display." The reference to "offenders" in the Ministerial Statement is interesting since it suggests that extension of TV to the Crown Court will be, at least initially, for sentencing hearings only and, even then, it would probably be selected cases. Obviously, more details remain to emerge.
Some of the potential problems are looked at by David Banks in "Televised sentencing: a screen test for open justice" - The Guardian 6th September. Of course, as the Ministerial statement makes clear, the extension of television below Court of Appeal level will be developed in consultation with the judiciary.
Live streaming of most hearings in the Supreme Court of the United Kingdom commenced in May 2011 and appears to have been highly successful.
See also CharonQC's blogpost - "Ave, Camcorderdirector, morituri te salutant"
UK Human Rights Blog - "The revolution will be televised"
Halsburys Law Exchange - "Cameras in the courtroom"