The popular Channel 4 gameshow has banned certain phrases and even asks contestants to mime their clapping. 

Behind-the-scenes there is a strict code that contestants must adhere to.

Twitter user Annie shared a number of excerpts with the caption: “Rules for going on Countdown. These are 100% genuine.”

The first instruction read: “Don't say 'can I get'. When requesting letters or numbers from Rachel [Riley], please avoid using the expression ‘can I get’, as this generates a large volume of complaints from viewers.”

Reiterated a further two times at the end of the list, contestants are also warned on the word “please”.

The rules state: “Contestants should avoid saying ‘please’ too often when selecting letters.

“Once for the first letter and once for the last letter is probably best as we get complaints for no ‘pleases’ and complaints for too many.”

Those hoping to take part were also asked to pretend to clap so that it did not interfere with the recording.

The guide read: “When clapping, please just pretend to do so.

“One last thing is pronunciation of the word ‘consonant’. In the past, anything from ‘continent’, ‘condiment’ to ‘constanant’ has been used, much to the irritation of viewers. Please try to say ‘consonant’ as clearly as possible.”

Contestants are advised on how to dress for the show, adding: “A dressing room is provided for you to change in before a recording. We do like our contestants to be dressed smartly, so an effort would be appreciated.

“Although everyone is given a dust over by make-up before the show for camera purposes, do not expect a complete transformation."

Express.co.uk has contacted Channel 4 for comment.

Countdown continues on Monday on Channel 4 at 2:10pm.