Invoice payments may be made by Bank Transfer (BACS) using the bank account details shown at the bottom of your invoice. Should this not be possible you may make the payment here using your PayPal account or your credit or debit card.
You will be taken to the PayPal payment system (no account required) to enter your card details securely. Brainstorm will not have access to this information.
Always check the PayPal URL starts with https://www.paypal.com/ and the payee is Brainstorm Systems Ltd.