In one form or another, Andy has always been a writer. At school, he passed notes in class and scribbled rude words on lampposts. At University, he wrote a PhD in biochemistry and forged tickets to various balls.

And as an advertising copywriter, has written commercials for everything from baby food to booze. But it wasn't until he was well into his thirties that Andy stared writing fiction.

If he could write a letter his younger self, it would urge him to stop messing about and get on with it. Four is his fourth novel, but should probably be his tenth. 

A unique mixture of one-liners and Scandinavian-tinged stories has earned Olaf the purely fictitious title of 'Sweden's eighth funniest comedian'.

His recent exploits include coming second in the 2014 Laughing Horse New Act of the Year, beating the Comedy Store's infamous Gong Show (twice just to show off!) being crowned the 2013 Golden Jester and also being named Last Minute Comedy Club's New Act of 2013.

Old Macdonald Heard a Fart is Olaf's very first picture book and was discovered via Twitter.