Yes FGT I've read them both. They're quite different, I was a bit dubious with Tomorrow, Tomorrow and Tomorrow! I got it given with a couple of other books last Christmas and thought "hmm! I don't know whether this is going to be my cup of tea", from its blurb, thinking it sounded a bit geeky. Pleasantly surprised, I really enjoyed it, both moving and quirky. I think Netflix or one of the others may have bought it, I can see it would translate well on to the screen. I remember thinking what a weird title, but it's a quote from one of Shakespeare's plays, can't remember which one, but it comes into the story briefly.
The Whalebone Theatre, also good, read it a couple of years ago, not so fresh in my mind. A family saga slightly in the vein of The Cazalets, around the aftermath of the 1st WW and leading up to the 2nd, involving French Resistance when one of the characters ended up in France. Between the wars though, as the title suggests, there were whale bones and a lot of 'em. Which were resourcefully structured into a theatre, as one does when stumbling across a beached whale.
I thought it was quite good at the time.