Is there a police show I can download for preschool aged

[getthroughthisgrr]

My DS keeps asking for a police show. I can't find anything. A friend suggested Lego night have some with police in, but I can't seem to find anything on iTunes. My DS has a really old iPad. But I guess I could buy it on erm something else. I'm not tech savvy and I don't really want him freeranging on YouTube as he changes it and watches drivel.

If you download the kids you tube you should be able to get the Lego city police episodes on it.

Otherwise you're probably going to have to resort to shows which have policeman in and search for individual episodes, like postman pat.