On Saturdays there are generally a couple of Computer Fairs open in the area around Totenham Court Road. What generally happens is that who organises them, rents a big hotel hall (or university room) and calls lots of people from computer shops around London. The entrance generally costs around 1 or 2 pounds, but the prices are generally slightly better than those you can obtain in other places in London. The nicest thing is that even if it is necessary to ask for discounts, it's not as tiring as it is with shops on the main road, and you can simply walk around the fair and write down the prices for all components, and then when you found the one who sells (on average) for the cheaper price, you can ask him to revise the prices for the more expensive products showing him that the competitor at the other side of the room shows a better offer...As far as the real shops in Totenham Court Road, I've been so bored by their behaviour of Bazar market, that I don't feel about suggesting any.Alternatively,
www.scan.co.uk has good prices too! Delivery is within next working day, so it's worth considering.gc