I am under Guy TB as an NHS patient and he has been lovely and very clear in his explanations. We have seen him a few times due to bad screening results followed by other problems, he always takes time with us and is generally very professional and charming.
I had DD at the Lindo Wing with Dr. Horner and am now 33 weeks with DC2, and I'm using him again. I have absolute faith in him from the medical perspective. On a personal level, he is pleasant and non-alarmist.
I had Guy Thorpe Beeston perform some scans last year and he was lovely If I were to get pregnant again and my usual obs was not available I would opt for him. A friend had him for both her pregnancies and was delighted.