There is a method I know but it can seem a little bit complicated
Here's what you do.
1. Find a local bank
2. Go in and ask to open an account (This is important - it's an account you want - not to borrow a pen)
3. When you have opened an account they will give you an account number and sort code. This is to distinguish your account from all the others in the bank and you must make a note of these numbers
4. Log into Paypal and where it says add a bank account you give Paypal the numbers the bank have given you. Care should be taken at this stage to ensure that you use the correct numbers - only use the numbers the bank have given you, never make up your own.
5. Withdraw funds from Paypal to the bank account
6. Go to ATM and withdraw cash with piece of plastic the bank have given you
Now I appreciate that this may seem complicated at first but I assure you many many other people have gone down this route and found it to be a simple and efficient means of getting their hands on their cash.
A little practise and you will soon get the hang of it