Editing Whack-O! (section)

==Cast==
* Professor James Edwards played by [[Jimmy Edwards]]
* Mr Oliver Pettigrew played by [[Arthur Howard]] in 1956–60 and [[Julian Orchard]] in 1971
* Mr F.D. Price Whittaker played by [[Kenneth Cope]]
* Mr S.A. Smallpiece played by [[Norman Bird]]
* Lumley (a pupil) played by John Stirling
* Mr R.P. Tench played by [[Peter Glaze]]
* Mr Halliforth played by [[Edwin Apps]] in 1956–60 and Peter Greene in 1971
* Parker played by [[David Langford (actor)|David Langford]]
* Mr Forbes played by [[Keith Smith (actor)|Keith Smith]]
* Mr Proctor played by [[Brian Rawlinson]]
* Mr Dinwiddie played by Gordon Phillot in 1956–60 and [[Harold Bennett]] in 1971
* Mr Cope-Willoughby played by Frank Raymond
* Matron played by Barbra Archer, [[Liz Fraser]] and by [[Charlotte Mitchell]]
* Taplow played by Gary Warren in 1971
* Potter played by [[Greg Smith (actor)|Greg Smith]] in 1971
*Proctor played by [[John Clegg (actor)|John Clegg]] 
* [[Clodagh Rodgers]] appeared as herself during the colour series in 1972<ref>{{cite web|url=http://genome.ch.bbc.co.uk/9fe1eec7951242cf8e981bcf54941861|title=Whacko! - BBC One London - 19 February 1972 - BBC Genome|website=genome.ch.bbc.co.uk|accessdate=20 September 2018}}</ref>
* [[Max Bygraves]] appeared as himself in one episode in 1960<ref name="IMDB">{{cite web|url=https://www.imdb.com/title/tt0162833/fullcredits|title=Whack-O! (TV Series 1956–1972)|accessdate=20 September 2018|via=imdb.com}}</ref>
* [[Vera Lynn]] appeared in one episode in 1959<ref name="IMDB"/>