I think the perceived "remoteness" of CSH, especially to those from out of town, is probably due to the fact that people only think "tube" and it is a bit of a walk from the rather seedy Camden Town station.

But perhaps the society could make more of the fact that the 274 bus stops right outside, is fairly frequent, runs late and gets to Baker Street quickly with plenty of links to central London and other parts. Even Paddington!

In the other direction it goes through Camden Town and on to Islington, so plenty of links that way.