I'm not around for tomorrow as I'm off for a what's billed as a gentle Kent pootle but I thought it would be worth recommending a trip on the cable car from Greenwich to the Excel centre, or vice versa.
I've just been on it and it's fun, quiet, stable in today's wind, and you get great views of London. As it was pretty busy - the first Saturday since opening - there was a little queuing but if you've got an Oyster card it's quicker (cheaper too) and if you put the bike in the lift you move up the queue when you filter back in. An attendant, who admired my Ergosum handlebars, went ahead and lifted the bench seat on one side for the bike ready for when it carouselled its way round to the boarding point. And the bike gets to climb 290-odd feet in about 30 seconds - it's not often your bike gets to climb that quickly! Good fun, highly recommended, bike friendly, and I'd be up for another crossing next Sunday if anybody else is up for something new to do on the bike in London.