St Paul's Girls School and JAGS have their entrance exam on the same day. We have applied to both of these schools and are now faced with having to choose between one of them as DD cannot possibly take both the exams. Has anyone been in a similar situation before? Are schools ready to offer an alternative date for those with a clash??

There are always clashes but seem to be way more this year, particularly with the boys's schools. They are very used to it- just call them up and let them know. They should have reserve dates.
JAGS/SPGS may be less of a usual clash as they are geographically far away from each other. St Pauls Boys and Latymer Upper clash this year which is a major headache!