There are a wide selection of concrete and clay roof tiles. Redland and Marley are the most popular roof tile in the United Kingdom. The Redland tile is fantastic value for money and also offer a plain tile range which has now been modernised.
Plain clay tiles are a more expensive alternative and provide a very effective water resistant option for your roof.
Clay plain tiles suit older style houses and give more of a Rustic look to the property. In general, a cared for and well maintained roof can last at least 50 years altough there are buildings in Europe whose tile roofs have lasted centuries.