Hi RSVP - paypal states that you can send an amount up to the value of $10K or the equivalent from your verified paypal account. If you log into paypal it should tell you how much in sterling you can send if you click on 'see how much money you can send' button.
The other option could be to transfer it using Western Union (available at pawnbroking & cheque cashing stores on the high street - but to keep within compliance guidelines, they normally have a set amount that they can send within one transaction (normally up to £5k) Over this amount could be considered a cause for suspicion due to money laundering reporting rules under the FCA, but it is a viable and safe option never the less. I hope this helps