Here is a Chart of Educational Costs:

UNITED KINGDOM
	TUITION FEES	LIVING EXPENSE
Under Graduation	6000-8000 UK Pounds	4500-5500 UK Pounds/Year
Post Graduation	6000-12000 UK Pounds	5500-5500 UK Pounds/Year

To sum up, a minimum expenditure is ideal towards preliminary expenditure - including coaching costs for TOEFL, GRE etc. and an additional Rs 3-4 lakhs towards tuition and fees for one semester and living expenses for two-three initial months.

In case if bank loan or any other educational loans is available, you may not need to carry much money physically, since most payments would be taken care by the loan-granting institution. Some private education loans even pay for your living expenditure when you study abroad!