British English

 

British softcover 1-5 Children's version. Original cover edition
ISBN (in order):
978-0-7475-3274-5
978-0-7475-3848-4
978-0-7475-4629-0
978-0-7475-5099-9
978-0-7475-6107-9

British softcover 1-2. Children's version 21st century re-release (doesn't have same format as original, they're not as tall)
ISBN:
978-0-7475-4955-9
978-0-7475-4960-5

The Magical Adventure Begins boxset. From 2013. With cover illustrations by Joe McLaren. These covers were only produced in this box set, and only the first 3. My set is a bit sun bleached on the spines, but otherwise in great condition.
ISBN:

978-1-4088-4992-7
978-1-4088-4993-4
978-1-4088-4994-1

Harry Potter Box Set: The Complete Collection. 2014 Jonny Duddle artwork edition.
ISBN: 978-1-4088-5677-2

British softcover 1, 2 and 3. Adult original version. Quite worn copy of HP3
ISBN in order:
0-7475-4298-8
0-7475-4407-7
0-7475-4634-7

British softcover 4. Adult original version.
ISBN: 0-7475-5079-4

British softcover 1. Adult version, 2004 edition. One as a single, and a box set with all 7
Single ISBN: 0-7475-7447-2
Box-set ISBN: 978-0-7475-9584-7

British hardcover 1-7.  Children's version. Original cover edition.
ISBN (in order):
978-0-7475-3269-9
978-0-74753849-3
0-7475-4215-5
0-7475-4624-X
0-7475-5100-6
0-7475-8108-8
978-0-7475-9105-4

British hardcover 5-7. Adult version.
ISBN in order:
0-7475-6940-1
0-7475-8110-x
978-0-7475-9106-1

British softcover 1-7. Signature edition in box set. I also have 1-2 separately.
ISBN HP1 single: 978-1-4088-1054-5
ISBN HP2 single: 978-1-4088-1055-2 
ISBN box: 978-1-4088-1252-5

British hardcover 1-5 Illustrated edition. 
ISBN in order:
978-1-4088-4564-6
978-1-4088-4565-3
978-1-4088-4566-0
978-1-4088-4567-7
978-1-4088-4568-4

British hardcover 1-3. Minalima illustrated edition.
ISBN:
978-1-5266-2658-5
978-1-5266-3788-8
978-1-5266-6632-1

Harry Potter Boxed Set: The Complete Collection (Adult Paperback, 2018 Bloomsbury). Cover illustrations: Andrew Davidson
ISBN: 978-1-4088-5075-6

British hardcover 1-7. Anniversary House edition - Ravenclaw
ISBN:
978-1-4088-8378-5
978-1-4088-9813-0
978-1-5266-0618-1
978-1-5266-1031-7
978-1-5266-1818-4
978-1-5266-1826-9
978-1-5266-1832-0