Here are my answers to some frequently asked questions about being a writer. If you want to ask me something different, the best place to go is my social media platforms. I also do quite a few live Q&A events, so keep an eye on my Events page for details of those.

When did you start writing?
Around the age of seven I began writing rip-roaring adventures inspired by the works of Enid Blyton. These featured bands of children, robbers, stolen loot, ruined castles, secret passageways and hidden doors that swung open if you tripped on a tree root. All the other children in my class wrote stories that ran maybe a couple of pages; mine went on indefinitely until the teacher ran out of paper. I'd discovered that the pleasure of reading something exciting could be extended into the thrill of writing it too.

How old were you when you published your first book?
When my book of word puzzles came out, I was 23. My first novel appeared when I was 28.

How long does it take to write a book?
My first published book, which was a collection of word puzzles, took me a month to create. I shut myself away and worked every day until it was done. A longish novel, such as The Amulet of Samarkand, takes a year or so. Usually there's a couple of months when you're developing the idea and doing a bit of stop-start writing, then you've got maybe 4-5 months of solid writing, until the first draft is done. After that there are perhaps 2-3 months of rewriting, editing and copyediting. And then you have to wait for another few months for the thing to be printed and published! But a lot depends on the length and complexity of the individual book.

Where do you get your ideas from?
Ideas come from everywhere and can hit you at any time. I once got a very good one in the bath. The idea of Bartimaeus came while walking gloomily home in the rain. For Lockwood & Co., I wrote a short piece about a girl and boy with swords at their belts, who come to a house in modern London to deal with a ghost. I had no idea where the story would go, but I loved the idea of psychic investigators venturing into eerie places, so I kept writing.

Ideas can be big or small – crashing insights or half-baked intuitions. I think they come from almost anything: people you meet, places you go, things you read, conversations overheard, dreams, newspapers, today's television, childhood memories. The thing to do is write them down when you get them, or they'll quickly drift away.

How do I become a published writer?
There's no hard and fast rule about how to get published, and most writers experience rejections and disappointments before they succeed. I think the key things are:

Do you base your characters on people you know?
Not really. I suppose all writers must create their characters from bits and pieces of people that they've met or seen, but I don't deliberately set out to reproduce a living person. Having said that, the early character of Nathaniel in The Amulet of Samarkand is a bit similar tothe way I was when I was in my early teens – proud, uptight, idealistic, hard-working, over-serious. I hope there's a bit more of Bart in me these days.

What's your favourite book that you've written?
I'm pretty proud of all of them, but perhaps it’s Ptolemy's Gate, because this was the most challenging. I had to bring the original Bartimaeus story to a satisfying conclusion and tie up every thread, and I'm happy with the way it worked out.

Who's your favourite author?
I don't have a single favourite; it depends on my mood. I love Robert Louis Stevenson, who did Treasure Island, because he writes literary books that are also great adventure stories. Other favourites, who are all very different, are Dashiell Hammett, Jack Vance, Evelyn Waugh and PG Wodehouse.

Can you tell us what you're working on at the moment?
I am working on the third book in my ‘Outlaws Scarlett and Browne’ series – it’s a kind of futuristic British western, featuring gunfights, cannibals and giant otters (among many other things).