TV presenter Ant McPartlin and his mother were assaulted during a family meal in west London.
The Saturday Night Takeaway star was having dinner at Old Station House gastro pub in Chiswick when a gang started making rude gestures and using mobile phones to film him through the window.
38 year old McPartlin went outside to ask them to leave but the group put him into a headlock, The Sun reported.
His mother Christine was also pushed to the ground when she attempted to intervene.
More top news
A dramatic car chase has been spotted in central London amid filming for the next Transformers film.
Londoners have been stunned by a tattoo convention in which six body artists finished one person's back.
A map showing how Londoners are leaving capital has been drawn up from official statistics.