Should I wait for a new Biometric Letter?

[PrivateComstock]

Hi, here's my short timeline:

1. Got my first Medical tests done in January-2020
2. Got Biometric request Letter in May-2020
3. Couldn't appear for Biometric due to pandemic for the entire 2020
4. Received an update to get second Medical Tests done this month and got them done last week.

My question is,
Should I book an appointment for Biometric now using the original request letter received last year or will I get a new biometric request letter?

Thank you.