I havent put this for people to vote and i'm not claiming to have found it but i've come across a few people today who dont know how to get the walkers code so I thought i'd post it here.
Click the link and sign up, ...sounds a pain but it only take 5 minutes
'Well done! You’ve registered so all you’ve got to do now is use or collect your points to get fantastic offers on Rainy Day Savings. Bank codes and redeem your Rainy Day Savings points until 31st March 2011! We are sorry but the Win a Tenner competition has now closed. Click here if you want to convert your remaining Predictor plays into entries to win an Ultimate Rainy Day In. Click here for T&Cs.
If you've already banked codes on your mobile and would like those points added to your account, register your mobile here.'
Purchase a bag of Walkers special pack to find codes.
2 points needed for the 10% code...you used to get 2 points for registering thus you would get the 10% code straight away but they have stopped that now, seems you need to buy a bag of crisps to gain codes to get points