Not at our son's grammar. At the information presentations a couple of years ahead of the exam, the head was very clear in his advice that formal tutoring wasn't required.
Instead, he gave out sample exam papers, a short list of "recommended" work books and other advice/guidance as to how to prepare your child for the test.
He also highlighted all the areas that the children wouldn't have covered in their primary school by the time of the test, and again, handed out a list of topics and recommended reading/workbooks.
His third "big topic" was that the 11+ exam was nothing like the average primary child had seen before, so that exam preparation/exam technique was important to practice.
He very strongly advised against formal tutoring and instead recommending that parents spent time with their children working through his recommended workbooks, past papers, etc., for two reasons, one to cover the topics that they wouldn't have covered in school, and secondly to do exam preparation, i.e. learning the style of the questions, learning how to manage time, learning to answer the "easy" (to the child) questions first and leave the harder ones to come back to later, i.e. exam technique that primary school may not have covered.
He was very clear that he didn't want pupils tutored to within an inch of their lives who'd struggle with the fast pace and high demands of grammar school. He was clear that pupils needed to "want" to go to the grammar and needed to have it within themselves to work hard, study hard, and not just do it because the parents or tutor pushed them!
We, and other parents, came away from that evening with the clear "pathway" as to what we needed to do with our son, and formal tutoring wasn't part of that for us!