Sites to search for open-jaw flights and car hire?

A question about : Sites to search for open-jaw flights and car hire?

I'm trying to price a trip to Italy, flying from LGW to Milan then Florence back to LGW 2 weeks later (may be in reverse i.e. first flight LGW to Florence). I would also like to hire a car. Are there any sites I can search for the open-jaw flights and car hire as a package?
If not, which sites are good to search open-jaw flights and are there any car hire companies which don't charge too much to drop-off at a different airport from pickup?
Thanks for any help.

Best answers:

• Kayak is good for multi city trips.
• Easyjet do direct Gatwick to Milan and Vueling have flights from Florence to Gatwick so this would be 2 x one-ways
• You can also search for car hire on Kayak.
• Hi, I was looking for similar flights and used skyscanner to check prices for flights and car hire. I then booked direct with BA,got Ј20 quidco cashback,very good price for joint car hire and flights ,with very good times. This was for Heathrow to Milan,nearer for me, cheaper also.