‘This one has to be for Newt,’ I say, pointing to a modest wooden wand.

‘We wanted it to relate somehow to the animal kingdom,' she tells me, 'but we thought it was sort-of inappropriate to give him anything that might have a trophy feel to it. We didn’t think he would be into that at all. The main part of this one is wood.

‘That’s Queenie’s, yes,’ Molly says. ‘[Alison Sudol] did have a little bit of influence on hers because she really likes Art Deco. We put her taste in that and it really helped us get the time period, the era, into the design.

‘Whereas Tina’s wand is more functional, more understated. David [Yates] didn’t want it to be too jazzy because that wouldn’t suit Tina. We used an antique conductor’s wand for the basis of Graves’s wand.’

‘It’s fantastic. When I saw them for the first time, I just marveled at the detail. When you’re designing, you don’t have endless time to rationalise all of the elements to actually make the thing, so when you finally get to touch it, you’re like ‘oh, guys – you made it so good.’ It’s just amazing to see.’