I invite only a few children to keep things simple and I get the children to play simple games. I must have simple children as Charlotte is now 7 and she is still happy with this arrangement. But yes I have to admit it is not the easiest of options. E Entertainers Choose an entertainer aimed at the right age group. It all depends on how long you want them for and how well known and experienced they are.
Some entertainers can provide party bags, some food as well.
If you do not know the person, why not ask for phone numbers of past customers. They ll tell you how it went. It is often very good value and you can sometimes bring your own food, bringing the cost down. London Zoo and The London Aquarium are available for parties. Several branches in central London.