Peter's Yard is more expensive than most coffee shops, but the quality of the food and drink is far higher than most coffee shops.
Let's start with the bakery - the bread is fantastic and if I'm having a rubbish day, a loaf from Peter's Yard will definitely cheer me up. The cakes and patisserie is also great, with the Valrhona chocolate muffins being a particular favourite. Also try the cardamom buns, the right mix of spicy and sweet to produce a sophisticated treat.
The sandwiches and soups are also excellent, and fairly substantial. They are quite expensive though, and it's easy to rack up a bill of £10 per head on lunch, once you add in drinks and puds. However, if you'd happily spent £6 in Starbucks for a sandwich and a coffee, come to Peter's Yard, spend £8 and enjoy the extra £2 worth of quality. No limp lettuce or burnt coffee here!
The coffee is the real star. It's easily one of the best brews in the city, and often accompanied by truly amazing latte art. It's naturally sweet and smooth and worth every penny.
There's also a good deli section, where you can pick up various crispbreads, biscuits, teas and coffees, as well as a couple of recipe books. It also sells an excellent range of high quality chocolate. If you need some Amedei Chuao, or some single origin Cluizel, Peter's Yard has it.
It's a great place, and my only complaint is that sometimes it's too busy to get a seat!