Radio Caroline. It is an Ofcom-licensed community station, and this is what it publishes about taking music from artists.
Status
Research
How they take music
See sheet
What they ask for
Contact page publishes [contact on your sheet], [contact on your sheet] and [contact on your sheet], each scoped to something other than submissions. Its only music instruction is a request rule: "Please only send music requests during broadcasts from Ross Revenge, the Album Channel cannot take requ
The exact submission address or form is on your sheet, not on this page. That is deliberate: a station that publishes an address for artists should not have it republished where it can be harvested.
Rotation's free sheet is U.S. radio: 1363 stations, none of which has a rule about what country you are in. A UK artist can use it as it stands.