Hi Lomey, great time to visit considering the currency and all!
I recommend you have a look at
http://www.cigars.co.uk/where-to-smoke/ if you fancy some BOTL action when here.
Remember that smoking is banned indoors totally, and also outdoors if food is served. On top of that cigar smokers also get shunned both due to the apparent smell and certain social misconceptions about the demographic who some them.
That being said, the places that do allow cigars, our lounges, are something else. Quite high end and opulent - pretty much feeding that misconception I mentioned! But if you find yourself in London and want some company drop me a DM.
Also, while you are here, you have to check out a few of the top end sellers. A ridiculous selection and also purveyors of the EMS blends.
Thanks for the welcome!!
M.