I have found something very interesting for you to practise grammar and vocabulary and also very useful to revise for your exams. This activity was in Isabel Perez's site. She is an English teacher in Granada that has spent many years investigating how to take advantage of the use of new technologies in class.
It is a very original exercise (it's like a game) in which you have to go from one place to another by underground (you are going to work with the real London Underground's map). In every stop you have to do an activity before you move to the next one and finally arrive to your destination. Try to complete all routes!!!!! It's very funny!!!
Click London Underground's Activity