Payment
My preference is that you pay by bank transfer but otherwise PayPal is fine.
Bank details for UK students:
Account: 12777803
Sort Code: 04-00-75
If you are outside of the UK: using transferwise.com and transferring to my account is still cheaper than PayPal.
Here are the details if you are abroad:
British Pound account
IBAN
GB81 REVO 0099 7001 9736 35
BIC
REVOGB21
And finally my paypal is: