Their second single "Don't Listen to Your Friends" (1965) featured session guitarist Big Jim Sullivan from the Tom Jones band.
A subsequent single "Count To Ten" (1967) featured some session drumming from Mitch Mitchell from The Jimi Hendrix Experience.
Ruan O'Lochlainn who also worked with Jethro Tull, Rick Wakeman and Ringo Starr, did cover artwork and photography.
In 1973, Wishful Thinking was involved in the soundtrack for the British music film That'll Be the Day (with David Essex and Ringo Starr).
On April 16, 2005, the band members Kevin Finn, Brian Allen, Roger Charles and John Franklin reunited to perform on television for RTL (German TV channel).
Written in 1969 by English songwriter Dave Morgan, "Hiroshima" served as the title track for their 1971 album,[2] but it was not until its re-release as a single in May 1978 that it gained recognition.
It proved popular in continental Europe, staying 44 weeks in the German Top 40 charts, and reached its highest position at number 8 on 22 May 1978.