Can anyone please advise what sort of score they would be expected to get as a minimum to pass SET for English to qualify as she found Maths much easier so that should not be an issue
Note that the FAQ for the SAT (see http://www.wallingtongirls.sutton.sch.uk/FAQs-2017-entry
Does my child have to pass each paper in the Selective Eligibility Test?
It is the total score that determines whether your child has passed the test: so for example, a very good performance in English can compensate for one that is a little weaker in Maths.
So there isn't a separate score for Maths and English - it's the total
of the two which is important. So given what you've said, you might be OK.
As for what score is required to 'pass', it doesn't really work that way. They select a 'pass' mark (which changes each year) to ensure that they have enough students to fill their allocation (once they've filtered them down further at the second stage), but not too
many (as they have to manually mark all those second stage tests). In the past couple of years they've 'passed' about the top 40% of girls in the SET. (The numbers obviously vary a little, so that's only ball-park).