I would like to hire a car pick in Birmingham and return to Dover?
I can see you have searched and seen cars? That means they are available as the website is in real time.
you have to click on the blue EXPAND button, in case you didn't do that yet.
Can I hire it today?
Yes, if the website displays cars the location is open. But I think you are too late to pick up today. You might want to search for tomorrow. You can do it all online.