I'm creating a print portfolio and I have all my artwork printed in a4 size papers. Any ideas how I can put them together? Something which I can add and remove for future use. I actually designed a cover for the porfolio. Thought of making a book style but I need the pages to be able to be removed or add.

This is of course with limited budget.

Being in the UK you should have good access to lots of good printing companies. Where I live there is a firm who prints full colour portfolio's for around £20 for 20 pages.