U films and PG films according to the BBFC.

According to the British Board of Film Classification a ‘U’ film should be suitable for audiences aged four years and over. ‘U’ films should be set within a positive moral framework and should offer reassuring counterbalances to any violence, threat or horror. If a work is particularly suitable for a pre-school child to view alone, this will be indicated in the Consumer Advice.

PG
General viewing, but some scenes may be unsuitable for young children. Unaccompanied children of any age may watch. A ‘PG’ film should not disturb a child aged around eight or older. However, parents are advised to consider whether the content may upset younger or more sensitive children.