My son cleared Slough consortium exams by good score and got admission to Herschel Grammar school. A lot of the credit goes to the practice papers on chuckra website which gave a lot of practice and preparation to my son. We also got him to attend chuckra CEM mocks at reading and the results of mocks predicted him to make it to grammar school which he did.
I would advice all parents to spend time with their kids and help them with these test papers . You will see how much confidence they eventually get to tackle actual exam.
Good luck to all parents and please don't leave any stone unturned to see ur kid clear grammar school exam with good score.
Good luck to all.