Warning: this walk involves alcohol and can be taken at night.

•  Clerkenwell is rich in back-alleys. Start with the Clerkenwell Green with the Old Sessions House at your back and the Marx Memorial Library on you left and make a left into Clerkenwell Close where you’ll find the Three Kings pub. You might want to spend the rest of the evening here, especially in the summer when it’s so rammed you have to stand outside on the cobbles, resting against the railings of St James Church looking up at the stars.

• Or you could weave on through the connecting alleys to St John Street (I could tell you how to make the ¾ horseshoe turn but it’s probably more fun to work it out yourself), to goggle at the design shops and restaurants.

• At the end of St John Street you’ll find yourself facing Smithfield. Explore the market or, if it’s later in the day, the bars around it, pausing to marvel at city suits knocking back cocktails and overpriced steaks.

• Back facing St John Street, continue a block further East along the market and go down Charterhouse Street to the Fox and Anchor pub.

• If you’ve now drunk enough and need some food, push your way past the drinking suits into one of the oak-lined snugs which will seat anything from a romantic two to a birthday ten or so. Eat their hand-cut steak tartare, the best outside Paris. Drink porter from curved pewter tankards. Go on up the street to the clear space of Charterhouse Square to look up at the stars; you’re standing on a 1348 plague burial ground.