Your very first anniversery - congrats! And of course it should be special, and sweet that you're going to make it for him!
Here's a site I found on your very own BBC site! It's for Valentine's recipes, but will give you some ideas to start with! http://www.bbc.co.uk/northernireland.../recipes.shtml
Maybe if you'd also give us some suggestions on what you both like/dislike, budget, etc., we could help you come up with something spectacular!