There will be plenty of flats available at that time in London. Is your hubby's company helping in any way? It sometimes takes a while to rent a flat, especially as you won't have a UK bank account yet...I'd suggest at the least to get a letter from your hubby's company saying that he'll be working there as a reference. If you can, it might also be worth just trying to do a short term rent (6 months) so you can see other areas in London at a later date...I've moved a few times in my 2-1/2 years here.