Returning to the UK in 1969, he cut a solo record, "Get Down With It Satisfaction", a medley of songs by Bobby Marchan and the Rolling Stones which became a Top 30 hit in the Netherlands, reaching number 29 in February 1970.

In 1979 and 1980, Mac Kissoon had three solo hits in the Netherlands, including "Lavender Blue" and "Love and Understanding", both reaching the Top 10.

[6] Their pop soul music career having receded by the early 1980s, Katie and Mac Kissoon were in demand as backing singers and session musicians.

Katie Kissoon's career as backing singer has continued with Van Morrison (1978 and later), Elkie Brooks (1982), Eric Clapton (1986 and later), Roger Waters (since 1984), Elton John (1985), Eros Ramazzotti (1990), George Harrison (1991), Big Country (1991), Pet Shop Boys (1994), George Michael (Unplugged on MTV 1996), Robbie Williams (2000 and later), and Mark Knopfler (2018).

[9] In 2006, Katie provided backing vocals on Andy Fairweather Low's album Sweet Soulful Music.