All credit to roseinwinter for posting this in another Boden thread. I thought others need to be made aware of it!
G2N2 gives 25% off, free delivery and returns. The best code I've seen for ages. Worked for me last night but didn't work on the selected items currently in their 20% off promotion for some reason (these remained at 20%).
Yay, thanks roseinwinter, you're a star!