Hmm. Katy, that may be it! Thanks!
Still won't keep me from visiting London again. How's the snorkeling there? Oh, that's right, never mind. The Thames isn't known for that.
Give it a go - and make it to your personal taste. (But don't go overboard on the tomato puree.)
As for London? I was there in August and it was hopping! A very vibrant place to be! So definitely come back!
And the Thames is a lot cleaner than it used to be...... but I still wouldn't snorkel there!!