The 65 bus route doesn't serve serve Chiswick, Hammersmith, Syon and Isleworth. The 267 and 237 serve people coming from either end of these routes and drop right outside the current building and will drop near enough outside the proposed new building. For those coming on the 65 from Kingston and Ealing, it isn't that far a walk to the proposed new site, otherwise people can hop on the 267 or 237 for a couple of stops.Brentford train station is but a short walk from the proposed new site and, apart from the buses already mentioned, the 195, 235 and E8 have a stop very close to or directly opposite the site.I agree with you, however, that the current site of Waterman's is preferable as a scenic, waterside site and that no parking at the new site could make things difficult for some people.
Anne England ● 1701d