Yup, everywhere I've read points to his videos so they're definitely my "go to" guide this evening.
With regards to the barbers, I had it done at Windsor Barbers which is right next to the Queen St. Sainsbury's store (it's in a sidestreet just behind it). There was a voucher on GroupOn to get their £85 package (haircut, hot towel shave and facial) for £30 I think it was. They were named by Men's Health as one of the best in the country so thought I'd treat myself.
They have a little store in there too where they sell stuff, most of what I saw was Taylor of Old Bond Street but didn't catch the prices. I'm guessing it has a pretty hefty markup compared to online though.
Nice people, good service. Don't think I could afford the full £85 on a regular basis but nice to know what you get for your money.