This petition was rejected

The Government e-Petitions Team gave the following reason:

Sentences that appear to be unduly lenient cannot be referred through the E-Petitions website. If you believe a sentence given in a Crown Court appears to be very low, or unduly lenient, anyone can contact the Attorney General's office asking for the sentence to be reviewed as long as it is within 28 days of sentencing.

It also only takes one person to make such a request. In the case of Stuart Hall, the Attorney General’s Office has already requested the papers from the Crown Prosecution so one of the Law Officers can decide whether or not to refer the sentences to Court of Appeal as being unduly lenient.