Saturdays:

Well obviously, my first recommendation will have to be Broadway Market where I have my chocolates & cake stall! It's a once-a-week Farmer's market in the heart of east-end London. It currently has about 80 stalls, a third of which are non-food stuff like cool vintage wear, independent designers' hats, dresses, handbags, etc. Walk alongside the canal to get there or get a direct bus from Angel. You can buy goodies to take to the park opposite and mingle with the arty locals & young trend-setters. Soak in the bohemian atmosphere. Later, head to the pubs (on the market) where people spill out to the streets, sitting on pavements in the summer.

Check out the British art galleries in style. First see what's on at the Hayward Gallery (past exhibits include Bruce Nauman and Dan Flavin), then stroll alongside the river to Tate Modern. Head to the stylish top floor restaurant for lunch (kids eat free!) and 

insist  on the window seat to enjoy the fantastic river view with St. Paul's Cathedral opposite.

Another Sunday fave is to go to Columbia Road Flower Market. Get down-to-earth mug of tea from a cafe in the courtyard on Ezra Street & enjoy the day.

If you haven't purchased any huge plants to weigh you down, head to Brick Lane (just a 10 minute walk away) to buy the famous bagels at the Brick Lane Beigel Bakery. It's super cheap at 20p per plain bagel. People buy in dozens so that they can freeze them at home. The Salt beef bagel (£2.60) is also a legend. (editor's note: you have our New Yorker interests piqued!) 

And again on food front, good hot chocolate can be had at Coffee@Brick Lane (note new address, just down the street from original location) where you can slouch on their couch like your student days. 

After you're satisfied with a bagel & hot chocolate, turn in to Cheshire Street off Brick Lane for serious bit of shopping in the small selection of independent shops such as Shelf & Labour & Wait.  If you go to the opposite side of Brick Lane, you'll find yourself in the world of early Georgian architecture with narrow cobbled back streets 

(Fournier Street area). Think, Jack the Ripper walked these same streets back in 1880's!

Marylebone High Street is great fun. Browse Skandium designer furniture store and Divertimenti kitchen store, dream that you have hundreds of pounds to spend here and then do lunch with your girlfriend at La Fromagerie (2-6 Moxon Street, off Marylebone High Street) where you sit on a small communal table, eating amongst the delicatessen. 

If there's room in your tummy, buy yourself a very decent hot chocolate from Paul and head towards Wigmore Street to check in on Margaret Howell. Then cross the road to St. Christopher's Place to drop in on Marimekko to see if there are any good offers on their fabrics.

Definitely during the Open House event (this year the dates are 19 & 20 September 2009). There will be 700 buildings of architectural interest across the capital opening it's doors, completely for FREE! You get to go in to places usually never available to public viewing! Dream-come-true for one nosy person like myself!