Several discount codes for Glow Dreaming UK are available. One of them is 'MAMA15', which offers an extra 15% off. Another code 'FIRSTTIME' provides a 45% discount on the entire order. There's also a 10% off discount code available at checkout. Additionally, free delivery is offered on all UK orders. Please note that these codes may have expiration dates, so it's recommended to check their validity on the respective websites. If these codes do not work, please visit the official Glow Dreaming UK website or other coupon websites for the latest offers.