The station has 5 platforms. Platform 1 and 2 are on the "fast" Reading – London lines, with Platform 1 being the "down" line (from London). Platforms 3 and 4 are the "relief line" platforms, with platform 3 being the "down" line. Platform 5 is a west-facing bay platform with access only to the Henley Branch Line. Platform 4 also allows access to the Henley Branch via two crossovers: one just east of Platform 4 and one just west of it between it and Platform 5. Throughout the day trains mainly call at platforms 3, 4 and 5. However, during peak times fast services to and from London Paddington use platforms 1 and 2. The platform are of differing lengths. Platform 1 is long enough to accommodate an eight coach train; platforms 2 and 4 can each hold a nine coach train; platform 3 is long enough for twelve coaches; whilst platform 5 can hold just five.