In the UK our music is registered as PRS Production Music. All uses must be either licensed through them in accordance with their rate card and/or reported in accordance with any broadcasters terms of licence.
If you are making an advert, a corporate video, a video game, a trailer or a film you will probably need to licence via the PRS rate card. The current rates are published here. If you are struggling to understand which category your production will fall into, or you have an issue with the rates you can contact the PRS licensing team on 020 8378 7555.
In general, most uses in programs and promos commissioned by UK broadcasters are covered under a blanket licence held by the respective broadcaster and no rate card fee is required on the part of the production company. However, they must ensure accurate cue sheets are submitted and reported. If you are in doubt as to whether or not you are covered in this manner you should consult with the broadcaster in question.