Any thing by practicing will be better but you should do your best knowing more vocabularies expressions 

Hi! I've been living in London more than 3 years. When I arrived here I couldn't speak english. I tried to learn in a school and myself. It wasn't working well but It was the first step and after I found one of the person who was my friend. When we started to speak, it was hard, and after we could improve our english together. We spoke about everything, we didn't try to learn in the first time the grammar or words. If we didn't understand any word, the other wrote around that word, so we learnt the words from the daily life. You don't necessary to afraid about that your partner won't understand you. If you speak about things which is interested you, it will easier. Don't be shy! That is natural that you can not speak in english, because you aren't british or us! You need to accept that you need to learn. Don't ashamed of your poor language skill! If you find the perfect partner to you, it will easy to learn and maybe you will find your new friends as well! Best wishes! Good Luck!

Just pick a teacher and have a try! There are lots of teachers here and I am sure they can all help you if you really want to learn. Just don't be shy and have a try!

i will

I can teach you if you want :)