I came across this while looking for a wallet and got 20% off instead of the full price online. I've been a member for years but it may be worth a try as it worked for me. Strandbags has recently revamped their website and we had to "reactivate" our accounts.
Unsure of expiry. Also unsure if it's the same code for their perks/loyalty program. If you know more, please feel free to let me know so I can amend this.
I've added the Perks link FYI. If anyone signs up and finds the T&Cs, please let me know.