Bloomfield a good place to start; dont know if they have a list of local freelance dyslexia teachers. We used Chris Barry but I think she has moved on from one to one teaching. Tutoring does help, especially with building a child's slef confidence but beware of how tired they get...Saturday mornings best. Our dyslexic son was at DCPS and then we moved him to Hornsby House School in Balham which had v gd special needs support. Not sure there is such a thing as 'non selective private'? We eventually opted for boarding school at 13 as most London day schools are quite pressured.