It was on display when I visited in August 2019. Email the library & ask them, they are most helpful & with prompt replies to any questions I’ve asked them.

Sorry, haven't seen the film so I cannot help. I suggest ringing the Library - the staff are extremely helpful.

No hay. No es recomendable llegar con niños...

Around1.5-2 hours should do it. Depends if you want to read and interact with everything. It’s a bit like - How long is a piece of string.

Yes it is in the Treasures of … section. I would check the web site to make sure of the opening hours. Hope you enjoy it!

Portsmout - I haven't been on one, but looked this up on a search engine, "DuckDuckGo" which came straight up with the website of the British Library and it's tours. They are only done in certain months of the year and usually on most days of the week, but not every day from when I clicked on the booking button, Tuesday was missing. It's £10 for the tour and if under 18 years old, £8. When I went to the British Library, I wanted to look up the microfiche of old British newspapers - I wasn't allowed in as I had no ID on me, they wouldn't let me in without, so if you have a driving licence or passport take these, with a bank statement, or council tax bill as well. They insisted on me having 2 forms of ID - so I never got any further in, which I was really annoyed about.

Nothing much to add. There was a small fee for the Cook exhibit, but the rest was free.

Yes the have a cloakroom where you can leave luggage.

This is entirely free and you can just walk in an out at your leisure.

Yes it is free. i think you have to pay if you wanted to go to the Harry Potter Exhibition.