Echo is an online pharmacy owned by Lloyds Pharmacy, and they are giving new users a £5 gift card if they sign up to their mailing list. You will not need to make them your nominated pharmacy (unless you want to). However, I do actually use their service myself, and I would honestly recommend it.
I should add, it took me literally 2 minutes to sign up and receive my voucher, although I know they are having delays at the moment, so you should receive your voucher within a week or so. I chose John Lewis myself, but there are many others to choose from, such as Amazon, Argos etc.