I remember some on the list but not these as it's possible they were not major hits in the UK!...
Ohio Players - Fire (February 8, 1975 - 1 week)
Linda Ronstadt - You're No Good (February 15, 1975 - 1 week)
The Doobie Brothers - Black Water (March 15, 1975 - 1 week)
B.J. Thomas - (Hey Won't You Play) Another Somebody Done Somebody Wrong Song (April 26, 1975 - 1 week)
Tony Orlando and Dawn - He Don't Love You (Like I Love You) (May 3, 1975 - 3 weeks)
Earth, Wind & Fire - Shining Star (May 24, 1975 - 1 week)
Freddy Fender - Before the Next Teardrop Falls (May 31, 1975 - 1 week)
John Denver - Thank God I'm a Country Boy (June 7, 1975 - 1 week)
America - Sister Golden Hair (June 14, 1975 - 1 week)
Hamilton, Joe Frank & Reynolds - Fallin' In Love (August 23, 1975 - 1 week)
John Denver I'm Sorry (September 27, 1975 - 1 week)
Neil Sedaka Bad Blood (October 11, 1975 - 3 weeks)
Silver Convention - Fly, Robin, Fly (November 29, 1975 - 3 weeks)
The Staple Singers - Let's Do It Again (December 27, 1975 - 1 week)