I can't assist on specific neighbourhoods but some general information based on my extended family & friends there:
It's expensive, especially for housing. The average price of a detached house is almost $2M now in Toronto proper. As you go outside the city, be aware that newer neighbourhoods have very high densities and this translates to large homes packed onto small lots. Older homes have larger yards, if this is a concern for you.
Education is good but there is more emphasis on equality and fairness and less on setting, streaming, top academics. People used to very academic UK schools would find it an adjustment. French Immersion is an option and there are state funded Catholic schools, but other religious schools are private.
Health care is good quality but it can take some time to find a family doctor (GP) and you need a referral to access specialist services. Family doctors are not pushed to prevent referrals the way NHS GPs are though, generally it's easier to get one. Basic health care pays for hospital and medical bills, but you will want supplemental insurance through work to cover things like pharmacare, dental, physio, etc. You cannot pay to go private to jump the queue for the vast majority of things.
It's pretty good for kids, lots to do. Generally very safe. Transit is not bad, though not really as extensive as it needs to be; they've been arguing for years about expansion. I don't know that I'd call it a very British city, though there's a large layer of that in the history of it. Some things about it are quite American, but it isn't an American city either.
It's not as outdoorsy as Western Canada but people do love going up to cottage country by the lakes, and sports are popular.
Groceries are not cheap, but there's a big choice of restaurants of all types. There's so many immigrants in and around Toronto that you can find all sorts of food.