I'd talk about the risk assessments you actually carry out & how they relate to the health & saftey at work act. i.e all the areas are checked for cleanliness & hygiene, equipent is checked for cleanliness & no breakages so the children, staff & visitors are safe to use the environment & access activities. Outside spaces are checked to makesure equipment is dry & safe, no animal feaces is in the garden, sand pit etc. Before going on outings the place you want to visit & your method of transport has be checked it's suitable for the children you are taking & meets all saftey standards.

Hope this helps.