Filmed across Europe over a four-month period, Knocked features several former and current internationals including Jamie Cudmore (Canada), Sam Underhill & Kat Merchant (England) Kevin McLaughlin & Lynne Cantwell (Ireland), Adam Hughes & Ben John (Wales) and Dan Leo (Samoa), who discuss their experiences with concussion.

Knocked also features interviews with RFU Medical Services Director Dr. Simon Kemp and neuropathologist Professor Michael Farrell, as well as lawyer Tim O’Connor and journalist Sam Peters. The world’s top referee Nigel Owens adds his thoughts to the debate, while concussion awareness advocate Peter Robinson speaks about the deadly effects of concussion and the need to drip feed constant information to the public to avoid more tragedies. #RugbyPassOriginals