Birchbox UK Year End Sale : Get 50% Off Your First Box! Posted by Hello Subscription on December 28, 2017. Subscription Box Coupons & Deals Make the first comment! Hello Subscription independently researches and reviews the best subscriptions and products. Things you buy through our links may earn us a commission. Save for LaterGo to commentsNotification Birchbox UK is offering a big year end sale! DEAL: Get 50% off your first Birchbox when you use the code SAVE50. Offer ends at 11.59PM 31st December 2017 or while stocks last. Are you getting a Birchbox UK?