Our Sainsbury's carrys Sausalitos, though (alas) not the Chesapeakes, nor for that matter, any of the other large Pepperidge Farm cookies. The Sainsbury's brand "American Style" cookies from their in-house bakery are pretty good, however - especially the raspberry and white chocolate ones.
I haven't seen Goldfish crackers anywhere thus far, but the in-laws are visiting this weekend, and are bringing some!
What ho! Goldfish!