When you arrive at your appointment, you should be at least 15 minutes early to go through security.
You will need to bring the following with you:
Confirmation that you have arranged an appointment
Your passport
Your BRP, and
A full pack of your original documents in the event some of your scanned documents have not been uploaded correctly
Your completed application form for the service you are applying for
Any supporting documents for your visa application
The Home Office fee for the Super Priority Visa Service is £800 plus the appointment fee which can vary between £50 to £260 (for premium lounge appointments).  Please note that not all appointments are subject to an additional fee depending on the centres and hours you wish to attend.