Very nice oak used for the bookcases. I chose the London oak which is a lovely light oak colour. My large bookcases was a bit disappointing in that it did not have an oak top to finish it off. Even though you ça not see the top, i like to put items eg vases, photos, plants to trail down on top of my bookcases and this has prohibited me from doing do. However my smaller bookcase I purchased had a lovely finished oak top, and I was very pleased with it. Overall great, speedy and efficient service. Easy to use website, very good and prompt delivery service, received within 8-10 days. Would recommend for furniture.