On the Interactive Knightmare webpage, there is stated a common misconception.

It refers to the character of Norm from the Twix Adverts.

It claims that Norm was played by Simon Perry from What's Up Doc?, a show that often followed Knightmare.

Simon Perry was a fictional character played by Steven Taylor Woodrow.

This actor did not play Norm.

The two characters look and sound the same, so the mistake in understandable.

However, Norm was played by Kevin Eldon.