^^ That's a good choice if it's the right size for you.
Otherwise, if you want to buy new, what is your budget like? Typically, good quality entry-level road bikes start at around £500. There are the usual suspects of Giant, Trek, Cannondale and Specialized, but there are other excellent brands coming through, such as Cube and Felt.
Pay attention to sizing, as how well it fits you is very important on a road bike. Don't buy the wrong size even if it's a bargain, or it can be torture.