Well its not all bad, certainly some places are worse than others, which applies for any city, but as far as im aware, the area where the Imax is, is in the West End of London, which isnt one of the best places to be. For the most part however, anywhere during the daytime and your fine, hell most of the time at night you'll be fine, its just at night at the weekends, it isnt the most desirable place to be