In the past the LHBPA has taken out insurance to cover tournaments and events, but throw ins are informal and therefore everyone is expected to cover themselves. This might be a different case if you were planning to run the sessions in a more formal capacity, or if you were going to ask people to pay to attend (don't do that). @punkture or @JonoMarshall might know about tournament cover
In the past the LHBPA has taken out insurance to cover tournaments and events, but throw ins are informal and therefore everyone is expected to cover themselves. This might be a different case if you were planning to run the sessions in a more formal capacity, or if you were going to ask people to pay to attend (don't do that). @punkture or @JonoMarshall might know about tournament cover