It is impossible for a small business of software development to survive in the current legal framework. Any body wanting to design a website, or write an application that uses a mouse, for example, is infringing patents owned by large multinational corporations.
If Britain wants to encourage small business, especially technology businesses, it must protect these businesses from the insane predatory practices of the large software houses.
You aren’t breaching a patent if you develop something with no knowledge of a patented idea existing elsewhere … patent law already does that.
What you’re talking about amounts to legalised theft.