You would probably be lose roughly 30% of that to Tax & NI
Assuming no dodgy tax code, that is roughly correct. NI is National Insurance.
To give you an idea, if you wanted to buy a house on that, assuming 5 times salary you could borrow £175k. The average flat price about 20 miles west of London is about £200k.....
4 - 4.5 times income is a more realistic figure, there are'nt many lenders if any at all offering 5 times income