What's the difference between self-charging and plug-in hybrids?

What is the difference between a self charge hybrid and a plug in hybrid and which one would you recommend

Best medium-sized petrol hybrid under £30,000?

I'm looking to buy a new, medium-sized petrol hybrid for under £30,000. I've tried a Toyota Corolla and the new Honda Civic, both are good. Are there any other cars I should consider before making a decision?

Can you recommend any 'self-charging' hybrids?

Is a self-charging hybrid as efficient, economical and 'green' as a plug-in hybrid (PHEV)? Can you recommend any 'self-charging' hybrids as I note that you give a good review to the Subaru XV e-Boxer?

Would a plug-in hybrid work for me?

I have a Toyota Prius, which is approaching 3 years old and 53,000 miles. In normal circumstances, which I hope we can return to soon, I drive approximately 21,000 miles per annum, including a daily commute...

I can't decide which hybrid to buy. Can you help?

I'm interested in buying a new saloon but with the changing circumstances, I would like to get a hybrid. I'm considering several choices, which include: 1. BMW 330e 2. Skoda Superb hybrid 3. VW Passat...