OK, somehow I've managed to let May and June pass me by...
July - we should be able to see the Summer triangle. The triangle is made up of the stars Vega, in Lyra, the harp; Deneb in Cygnus, the swan; and Altair in Aquila, the eagle.
Apparently, the easiest constellation to identify is Cygnus, with Deneb at the swan’s head forming the tip of a cross. Moving down the main stem of the cross you should reach gamma, chi and Albireo, which is a double star, which those lucky people who can see through binoculars (I can't

) can apparently see a blue star and a yellow star next to each other.
You should also be able to see Jupiter on the southern horizon from about 10pm at the beginning of the month, and earlier as the month progresses.