I get that patents != copyright, but we're still entering a rather strange state of affairs...
I might violate US patent law (which is an increasing concern given the apparent freedom of extradition), but I'm not violating UK law.
There is copyright over my writing (here, lines of code), but typically not over my idea.
AFAIK, software patent trolling isn't very bad in the UK
Truly innovative ideas: Patent and 20 years protection at some cost and significant paperwork.
Duplication or derivative of an expression (whether source code or binary files): Copyright and a long protection (too long but that is a separate topic) of that expression and derivatives of it.
Creative and unique design: Registered design (Design patent in US) fairly weak and narrow protection, not sure of the duration.
Copyright should be narrow protection as this case supports. That doesn't mean that no other protections should be applied to creative works.
(easy on the downvotes, it's just a little bit of humour, people)