London has the Thames River.  Supposedly there's diving elsewhere in
England, but I don't believe it.

Ontario is an hour drive from boats headed to the best cold-water diving in
the world, the Channel Islands.

Canada is a big country.  Be more specific.

Try talking to these people:

www.crosscurrentdivers.com

They have a shop in London.

Lakes Huron,Erie and Ontario. St. Lawrence river, St Clair river. 2-5 hour
drive depending where you want to go. Lots of stores to rent stuff. Lots of
wrecks at any depth you might want to go to.

Nothing within London. 1 hour away is Sarnia where you can dive in the St.
Clair river under the Bluewater bridge. There is a wreck there IF you don't
mind very fast currents. Also within that area is Port Lambton and the river
again.

But if you are spending some time in London, within 4 hours drive is
Tobermory, Ontario and Fathom Five National Marine Park. One of the best
dive locations in Canada (plz don't flame me, I say ONE of, not THE).
http://www.tobermorycanada.com/links.htm
Lots of diving both shore and boat. Many Many wrecks of varing difficulty
(from 30 ft to 200+)

Also 4 hours east is Kingston on the shores of lake Ontario Also many wrecks
and good diving.

Also boat dive on Lake Erie, etc...consider that London is in the centre of
southern Ontario and you can get to a lake within 30 mins. I am in Chatham,
Ontario 45 mins from London and there is much water close to us in 3 of 4
directions.

Better bring your wet suit, water temps are usually 50-60 F. 7mm or dry suit
is needed.
What time of year are you coming?

Good Luck
Bill

I'm led to believe that there is diving in Lake Huron and I've heard of
wrecks there but the water is very cold and the viz is not too good.

Sorry to be late, but I'm catching up.

I live about 40 miles from London and can assure you that there's lots
of freshwater diving in the area. We have a few little practice
quarries, but the Great Lakes are the real deal here. From London, as
someone as already posted, you're only 3 hours from Tobermory and 4
1/2 from Kingston, both offering what each area's fans claim to be the
best fresh water wreck diving in the world.  8)

And for the most part, these are real wrecks, not artificial reef
wrecks. personally I favour Kingston for it's warmer waters. But if
you have a drysuit or are immune to cold temps, Toby is nice too.

Lake Erie is closer and offers a few wrecks. Someone also mentioned
the Pt Huron funride. Great if you like big current and diving under
ocean-going freighters. If you find yourself missing the cold dark
quarries of home, you'll be only 4 hours from Gilboa in Ohio, USA.
It's pretty nice as quarries go, set up specifically for divers and
offering a shallow side complete with monster trout and Killer Koi and
depths to 65-70' with a few fun artifacts planted including a Grumman
jet, and a deep side generally considered to be 120' although there
are rumours of a 140' spot somewhere in the darkness. it's a popular
spot for deep and tech training, or for easy fun diving without the
hassle of boats and waves.

Welcome to Canada, and if you want me to deliver a kick in the a.s to
our California buddy, Gregm say so. I hope to be diving with him in
Florida some time soon.

JF CID

http://www3.sympatico.ca/johnfrancis/scubachat.htm