Just to confirm that this is the third-party company you talked about.
This is the website I received.
https://www.ukvcas.co.uk/home-internal
The original information is attached:
'You have chosen the super priority service. You must now book and attend an appointment with our commercial partner to provide your documents and your biometrics (fingerprints and facial photograph). You can do this by logging back in to your application via the link in your confirmation email and continuing to our commercial partner's website from there.You should receive a decision on your application within 24 hours of your biometrics appointment. We will contact you if it will take longer to process your application.''
Regards