where can i find train/air plane ticket and bus tickets for further travelling?

My family and i want to go to Birmingham. But since most of the cheap ticket flights doesn't go there we are going to take a flight to London. But my father wants a website where you can book the flight and a bus for further travelling at the same time!!! any help!

Why don't you just take a national express coach.
http://www.nationalexpress.com/coacheslanding.html

Can you get a cheap flight to Manchester? Its only a one and a half hour train journey then to Birmingham and the train station is at the airport. If you fly to London then you have to factor in the cost and time of getting from whichever airport into town and up to Euston station for the train to Birmingham.