Spark FM serves Sunderland. It is an Ofcom-licensed community station, and this is what it publishes about taking music from artists.
Status
Accepting
How they take music
Email
What they ask for
Posted on the station's Local Music page: "Email [contact on your sheet] if you fancy submitting your own music!" Email only; no form and no upload link is offered.
Where artists come from
Takes music from artists in its own area only
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.