wathombe said:For instance, Tom Clancy could not do a major "revision" of The Hunt for Red October, then sell the revision to another publishing house without the permission of the original publisher.
Hi Wathombe!
Unfortunately I believe you're comparing apples and oranges here. Remember a publisher is going to demand extensive rights to a novel .... exclusive rights. This would prevent Tom Clancy in your example from selling "Red October" to one company, then turning around and selling it to a second group. Unless the author is very well known and VERY well thought off, the publisher will tend to demand exclusive publishing rights. In that event you aren't creating a derivative work and selling it to anybody but them. Frog is currently concerned about the encumberances of a non-exclusive license, and I stand by my earlier assessment: They won't apply after extensive revisions.
However, as I mentioned Frog, when you do go for publication unless the manuscript is unrecognizable (and from what you said on your AAR thread I think it will be) it's best to be straight forward with the publishers. Hiring your own copyright lawyer is ... feasible, but expensive. Generally the publisher will have their own lawyers to resolve any outstanding issues.
Just as valuable, if you haven't gotten one from listening to us, is to get a bit of an education on British copyright law. There are any number of help books that should be able to answer your questions.