vadan, if you use a website such as
www.rightmove.co.uk you can check out the cost of accommodation.
The price of accommodation tends to be dependent upon three factors ... location, location, location! Accommodation prices do vary considerably. As they say, you pays your money and takes your choice.
I suspect you will not be interested in the 10-bedroom place in Birmingham on the market for £4600 per month! But for less than £350 per month there are certainly places available, and even cheaper than that if prepared to have shared accommodation .... your own bedroom, but other facilities shared.