From the VFS Website..........

Booking procedure for VIP Lounge:

Schedule your VIP appointment using one of the following options:

Email vip.ukph@vfshelpline.com and request for an appointment indicating your name as it appears on your passport, your passport number, the visa category you are applying for and the desired appointment time.
Call our dedicated VIP premium lounge service phone number: (632) 501-3217.Our operating hours are from 08:00 to 17:00. Local phone charges apply. You will be asked for your passport number, name as it appears on your passport, your email ID, the visa category you are applying for and to select a date and time for your appointment.
Once you have Scheduled your VIP premium lounge service appointment you will receive an email confirming the date and time of your appointment. Please print the VIP premium lounge service appointment confirmation and bring it with you on the date of your appointment.