He will be the one under arrest now going on what can be heard and seen on the recording. His police interview will be very interesting.
Hopefully he will lose his job 
This was three days ago, no police action so far. He can't 'lose his job', he's freelance and hasn't worked for the BBC for ten years.
Who said he would lose his job with the BBC? Will anyone employ him after that madness?
Police action takes a time with all evidence being reviewed and victims / witnesses being interviewed. Time will tell 
You carry on living in your own little world, Lizzie 
As criminal offences have been alleged, it will be down to the police if they want to present this to the CPS. The family do not necessarily need to do anything but give statements.
This is not strictly the case. If the police feel there is sufficient evidence to charge a summary only or an either way offence, and can show that
A) There is a realistic prospect of conviction
B) Its in the public interest to do so, and
C) All proportional lines of enquiry are complete
They do not need CPS approval to charge a suspect with an offence.
The only exceptions (pasted from cps.gov website) are:
a case involving a death;
connected with terrorist activity or official secrets;
classified as Hate Crime or Domestic Violence under CPS Policies;
an offence of Violent Disorder or Affray;
causing Grievous Bodily Harm or Wounding, or Actual Bodily Harm;
a Sexual Offences Act offence committed by or upon a person under 18;
an offence under the Licensing Act 2003.
Essentially the worst offence that's taken place in this incident is (in legal threshold terms) a low level public order offence. It doesn't appear to have been motivated by prejudice of one or more of the criteria I gave earlier.
My two main points, based on the information currently made public about this incident, are
- Cps are unlikely to be required in any decision
- If the alleged victims don't wish to give statements, there's unlikely to be a realistic prospect of conviction and it's unlikely to reach court. They don't "have" to give statements or support any action, and can't be made to do so.