Book about/ including a policeman?

[GreatGhoullyMoogly]

DS1 (reception) wants to dress up as a policeman for school book week. Does anyone know of any books that have one in them, appropriate for 4/5 year olds?

Noddy? or is that too young?

or I've just looked at amazon and there is a book called 'policeman small' - sounds perfect!

Ooh yes, that sounds good, thanks!