foreign mom-to-be in London

[Mummylee]

I am due in May. Can anyone recommend a pre-natal class focusing in breast-feeding in London?

the NCT will do local classes with breastfeeding covered. They are a national organization, have a look on their website for your local branch
have a look at this

What part of London are you in?

I run (NCT) antenatal classes in East London, but the ones for someone due in May are full. However, our local hospital runs BF classes that are free, and also runs antenatal classes (also free). I don't know how good the antenatal classes are, but the BF classes are definately excellent.