Thank you for these helpful responses!
Distance is not an issue as we will be moving to Bham in the next year (I changed jobs) and can look to move close to whichever school we choose.
If I am honest- I prefer a co-ed school just so that dd won't feel so awkward around boys and see interactions with them as special or unusual. That said- a ratio of 2 to 1 is a bit scary (thank you for the info muminbrum). Girls do perform better academically in girls only schools and I would worry about being in such a dominantly male school.
I will definitely try to get in to see both schools during the day in the next week- ahh so much to do!
Even though CHG is girls only (obviously, clue's in the name
) it is on the same site as CHB and I do see interaction between girls and boys on the way in and out of school. Best of both worlds, as girls perform better in single sex environments but boys aren't such a mystery as they are visible in and out of school.
We didn't much like CHG on the Open Day either, but seeing it on a working day is what transformed us! Now DD is there and I can honestly say she has never been happier in school, thank God (didn't enjoy primary at all
). We wouldn't have gone for a co-ed school anyway, but FW has far more boys than girls, so it depends on how your DD feels about that.
In the end, go with the school that's easier to get to and the one both you prefer. They're both good so you can't go far wrong anyway!