Have you visited English Cut.com yet? It's the blog of Thomas Mahon, "one of the youngest tailors on Savile Row" and it's actually pretty good.
Like most blogs worth reading, Thomas doesn't just give us trivial, daily details ("Wednesday: got my cat neutered, had a pot noodle"), instead he actually tries to educate the reader. So we learn where tailors like to drink, and who the best tailors on Savile Row are, and what 'bespoke' actually means:
"More than 20 measurements and figuration details are taken from the customer. Then a personal pattern will be hand-drafted and cut from scratch - not the basic, adjusted template pattern, as used by so many other tailors these days. Using your pattern, the cloth is then cut and trimmed, along with the finest linings and silks available. A single tailor is then given the parts of the garment to sew together, from the earliest fitting stages, to the final, complete suit. Each suit is completely hand-made, even down to the button holes."
Londonist isn't quite ready for the complete bespoke experience just yet (ok, so we can't afford it), but when we are we know where our first stop will be.