I have just come across the 45th anniversary edition of this book and I had to buy it. I LOVED this little picture book when I was a kid... the seagulls eating the lunch, and having to fend them off with mustard sandwiches because putting Hamish the cat in the basket to scare them off was utterly hopeless. Poor Hamish... he looks so ashamed of himself!

It's been an absolute delight to reread. I'm so glad I bought it.