Anyone can come and have a go at Street-O.
Things are kept pretty simple with most participants competing as individuals in either the Men's or Women's categories, (there are no age categories), although there are categories for Walkers and for Prams. Also, there is a Teams category which is great for beginners, families or for those who just prefer to go out with friends.
Since Street-O events take place in an urban environment children under the age of 15 will need to be accompanied someone 15 or older at all times, (and hence be in the Teams category).
If you find you like Street-O and want to compete regularly you should consider joining Newcastle Orienteering Club since entry is cheaper for members.