Agree with CD about the probs with private.
That said I went to Portland for my first; Lindo for my second. I was naive, and i didn't quite understand about the lack of back-up at Portland. I'm American, so a hospital is a hospital. . .we don't really have "maternity hospitals" there, so I assumed there would be back-up. Luckily I had a simple birth, and found the accommodations comfortable, if a bit luxurious for my personality.
I was a bit wiser the second time, and opted for the Lindo from the point of view of back-up. Again, I'd a straightforward birth except for a little postpartum hemorrhage. So, given the hemorrhage, I was glad to be in Lindo wingclose to the NHS sectionthough I never needed any serious intervention.
As for John & Lizzie's. . .My friend exsanguinated thereliterally almost diedand THEN had a botched operation to correct adhesions (almost died of infection that didn't respond to antibiotics). So in short she almost died twice at John & Lizzie's. But that case wasn't publicized because she didn't die. So I dislike any hospital without back-up, even John & Lizzie's
And frankly that's also the reaoni.e. no back-upthat I wouldn't want to give birth at home.
So it's true that Lindo is a little less impressive, but the care is very good, and there's the back-up afforded by St Mary's. . .so if I gave birth again and decided to go private, I'd opt for the Lindo wing. Good luck.