I know of people who have girls travelling from Chelmsford to Westcliff - they are friends of friends, so I will try to do a little digging and find some info for you.
I too was at Westcliff last night. We are going to put Chelmsford first choice (again distance being the factor) and Westcliff second. I was very impressed with both schools. I actually liked the Head's speech at Westcliff better than Chelmsford.
Are you finding the whole thing stressful? I keep hearing about children who are literally having 4 hours tutoring per week plus an hour per night homework. I have only done a small amount with my daughter in comparison.