"Smoking"

Please can something be done about the smoking right outside the doors of the Kensington antenatal clinic. I visited this week for my first scan and was disgusted how much the whole antenatal clinic stank of cigarettes. The two main doors were open and it was blowing right through, it's bad enough as a non smoker but even worse when you aren't feeling the best. Can you not make them go to a designated area or cross over the road. I could even smell cannabis which is appalling. It has really made me think about changing hospital. I have done my very best to avoid smoky environments I definetley don't expect to have to put up with it at a hospital. Please sort it I wasn't the only one unhappy about this. Thankyou