Can Boris get himself off the hook from partygate?

Boris Johnson has released legal advice that he received from Lord Pannick about the Commons investigation into partygate, where the lawyer said the investigation in its current form would be 'unlawful' if it were taking place in the courts. Can Boris really get off the hook? 

Max Jeffery speaks to James Forsyth and James Heale. 

Produced by Max Jeffery.