I am modelling London on a large layout and I need buildings that are similar to the ones around Piccadilly Circus, Knightsbridge, and Trafalgar Square and need similar buildings. If you know of any manufacturers, please post them up. Regards, Alec
Which scale are you modeling in? If it is OO scale, this will be about 10 % larger than HO scale, thus HO scale buildings would be grossly undersized.
There are not that many makers of kits for buildings you are looking for. Bachmann (UK) and Hornby may have some. Scalescenes and Metcalfe are offering card kits, which are very common in UK railway modeling.
I remember already seeing your question a couple of weeks ago - sorry that there is no new answer to your quest.