I just wanted to add my thanks for whoever first posted that NHS booking link - I sent it to my MIL (who is very much by the book so would have waited for the letter I think), and when my FIL went in for his jab this morning, he asked about her booking through the link. They asked if she was waiting in the car, which she was, and then told him to get her in so she's had her jab this morning!!
It's so brilliant - my DH hasn't seen them properly since last March, they have missed our DS growing from 1.5 years old to about 2.5 years old, so the though that they will be able to come soon, is just so exciting!!