Indeed, you should expect a certain amount of culture shock . Houses for example are generally smaller than in many countries, not least because this is a small Island with a lot of people living on it so land is expensive, especially in London and the surrounding areas (the "home counties" or "the south-east"). We are not talking Japan here, but all the same, do not expect a Californian style ranch-house for 200k ...
Fitted kitchens are always included in the selling price but if there are any free-standing components they may not be; tables and chairs will most certainly go with the seller unless you do a side-deal on those. You are given a list of all things that are included in the sale so it is worth taking time to check exactly what is included.
A good site to get an idea of prices and house types is: http://www.rightmove.co.uk.