Assalamualaikum,
I studied AS and A2 Maths from Sir Shahab. I always used to hate Maths because of the way it was taught, but after studying from Sir Shahab I finally started understanding Maths rather than memorising it.
He is one of the best teachers. He not only helps you one-on-one in class but also replies to your queries no matter what. From classes to WhatsApp, he's always there to guide us.
No doubt, if I were to do A Levels again, I would have chosen him as my teacher again.