Hello botticelliwoman. The '12 issues for £20' offer was a special one-year rate, to celebrate the 20th Anniversary of Gardeners' World Magazine, and was advertised as the cost for the first 12 months of subscription. The subsequent annual cost of £35.50 does still represent a saving of 20% on the retail price, so I hope with this, and the other exclusive subscriber-only benefits and offers, you still feel that you're getting value for money. I've passed your comments on to the magazine subscriptions team, who put the special offers together.
Best wishes,
Daniel
Editor, gardenersworld.com