200 free Nectar points (redeemable on Easyjet)
200 free Nectar points are available for signing up (for free) to SwimBritain.
You don’t actually have to do the swim, just sign up for it.
You need to choose the “SwimBritain DIY” option, add a UK address (it can just be a random one via google) and be sure to enter your Nectar card number when prompted.