Director of Harry Potter and the Goblet of Fire says formidable actor brought many things to a set, including ‘terror’

• Maggie Smith, Oscar-winning star of stage and screen, dies aged 89

I first met Maggie on the Harry Potter films, when she played Minerva McGonagall in Goblet of Fire. It wasn’t a very big part but she was always very notable, always poised in whatever she did – even when wearing a comedy hat.

She brought a lot to the part, and to the set – and one of those things was terror. Maggie never bit me, but I think if she did bite you, you stayed bitten.