Growth is good
It's generally a good thing. Here's how it works:
1. A canny British entrepreneur sets up a new business with his savings, and grows it into a tidy operation.
2. Foreign investor buys up the business. Cue much wailing and gnashing of teeth.
3. Original founder now has lots of cash, lots of experience, and time on his hands. He (or she) sets up another new business, creating more jobs and growth, and giving more consumers what they want.
Rinse and repeat.
It doesn't matter whether the buyer is foreign or domestic; what matters is that the entrepreneur can cash out of the boring mature business and concentrate on setting up innovative new businesses.