Yes @Araminta, I think that's where I am coming to. Even though the day to day commute might be similar time wise there are more options to get to HlBS quickly if we needed to and so it feels less far away, and if she found a friend or two to walk to the bus with it would be really quite a pleasant start and end to the day. Latymer would be a scrum to get on the bus probably, and even though StMM is nearer she was a bit freaked out by the busyness of the station at rush hour, so she'd probably get the bus instead, which is slower and involves a less nice walk this end.
And you're right re dd1. She "just" needs to knuckle down and then the world is her oyster for 6th form. She could even apply to latymer etc herself if she wants, though she's mentioned Woodhouse and Camden school for girls. I'm hoping she will find her feet with studying this year though she finds it much harder to do than dd2.
Thanks for indulging me. I think it's decision made in my mind, though dd2 is still at her residential so can't talk to her till the weekend.
Big results day today - well done to all the kids, whatever their results. And keep hanging in there those still waiting. It's torture!