The international london mime festival is happening over January and there will be some astounding visual theater with puppetry, circus, dance and everything. have a look here
I have booked tickets to go see Circus Kzlemer
I dont know much about either theater groups so im quite looking forward to the shows. There is also a talk from Tom Morris, the new artistic director of the Bristol Old Vic (where i worked for 7 years) it is good that such an interesting director is now re building the theatre. He got Kneehigh in for the Christmas show.