Diverse FM serves Luton. It is an Ofcom-licensed community station, and this is what it publishes about taking music from artists.
Status
Likely accepting
How they take music
Web form or submissions page
What they ask for
"Have questions? Contact us!" - general enquiry form; no music submission wording published
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.