Growing Up takes us to Beliera Priory, the home of Sir Harry and Lady Waring. The Warings have moved to the servants’ quarters, because the Priory has been taken over as a convalescent hospital. Nearby is a secret base, and the Warings receive a request to house an officer who is stationed there along with his wife. Although they are expecting their niece Leslie on a convalescent leave, they agree to billet the couple in their larger extra room.
To our delight, the couple turns out to be Noel and Lydia Merton, and in their exchanges of news with the Warings, we get to hear about almost everyone from the previous books. The Warings have been busy during the war, but the Mertons bring a little extra interest to their lives.
Leslie’s arrival is marked by a stranger carrying her case from the station. In the dark, she can barely see him, but he turns out to be Philip White, now a Colonel, whose disastrous romance with Rose Birkett was a feature of Summer Half. Leslie finds herself immediately interested in Philip.
In this novel, we are treated to the courtship of Selina, the Warings’ maid, by three men (a private young enough to be her son, a sergeant with eye trouble who is a greengrocer by trade, and Jasper, the Warings’s mysterious half-gypsy gamekeeper); the return of Tommy Needham, the fiancé of Lydia’s best friend Octavia Birkett, missing an arm; the goings-on at the Winter Overcotes (which you will be delighted to know is near Summer Underclose) railway station; as well as, of course, the progress of Leslie’s romance. Tony and Mrs. Morland make a brief appearance as do other old friends. Another delightful novel by Thirkell.
whatmeread 
This is a delightful exploration of all that has gone before and the addition of new people as well.
Is this my most favourite book so far? Possibly. I so loved seeing the Morlands, complete with hairpins and Tony being all grown up and sensible. Interesting that after 10 books they can still make me laugh out loud.
Yes, me too!
I found this a lovely one back in 2020, one of my favourites I think https://librofulltime.wordpress.com/2020/09/21/book-review-angela-thirkell-growing-up/
Me too!