A definite must for any shopaholic! We presented our Viator voucher at the terminal and got our tickets. It was a very comfortable bus, takes about an hour to get there (longer coming back due to heavy traffic). For bargains Woodbury Common is an absolute must. Prices are way cheaper that what you pay in the city and you also get a discount voucher book when you book with Viator, which gives you discounts in practically every store. I highly recommend it.