It was just roll-up UKCIG

 The Harry Potter actor, 20, was said to have lit up the "spliff" at the chum's flat, where he let a girl draw a comedy beard on his face.

But as he fumed over the claims, his spokeswoman declared that the smoke contained only tobacco.

She said: "Daniel does smoke the occasional roll-up ukcig arette, but he was not doing anything more than this."

Hinting the star may sue over the slur, she added: "We are considering our position and will be taking all necessary action in relation to such allegations."

Radcliffe - who shot to fame as schoolboy wizard Harry in the Potter films - is currently filming the first part of the Deathly Hallows instalment.

Amazed party guest Wadia Tazi, 26, accused him of appearing "spaced out" at the mutual friend's bash in Camden, North London.