Published Tuesday, 15 May 2012
The BBC Radio 6 Music presenter was nominated for the music radio personality of the year honour at the bash on Monday night, but lost out to rival Chris Evans.
Other recipients of awards at the prizegiving included British DJs Fearne Cotton and Lauren Laverne, and Morgan is convinced he was denied an honour because he hails from the US.
He took to Twitter to vent his anger after the ceremony, writing: "They ain't gonna let some dude from NYC win this s***. Fern (sic), Lauren, Chris. Yeah right, that's cool? Suckers they come a dime a dozen."
But red-faced Morgan later apologised for his remarks and vowed to retire from Twitter on Tuesday, writing: "I am sorry for my comments last night. If I offended anyone, I apologise. I will tweet no more. Goodbye and thank you for your reality check."