I think I recommended that site while ago to you....?
Yes, it's great imo, and ds loves it. We have been using it for over 3/4 years now. Greatest feature for this site is that it allows you unlimited access to all years(reception-yr13). It's not a teaching site, but explains in detail if you make a mistake. It's a lot of repetition, so some kids may not like it, but ds with bit of asd traits loves it. Relatively cheap, 69 pounds for English or maths, 99 pounds for both for a year.