I lived in Cambridge for 18 months in 1987-88. You should be very very glad of the tech companies there, because there's now a community to be a part of that isn't the university. When I was there (working for Schlumberger out on Madingley Road), there was almost nothing happening in town that wasn't university-related, and if you didn't have an inside connection, you weren't a part of it.

I have a sort-of-cousin who lives there now, and he loves it , though he did find a way into the university crowd anyway.