Horizon Radio serves Northampton. 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
Email
What they ask for
Get Involved page publishes [contact on your sheet] and asks for volunteers including 'specialist music DJs'. It carries no music submission process, guidelines or dedicated address for artists. The contact page publishes no email at all: phone 01604 389096, text/WhatsApp 079079 91055, and Studio 3,
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.