in the summer, . Services between London Paddington to Plymouth are at least hourly throughout the day. A number of named trains operate on this route including the Cornish Riviera, a fast London to Penzance daytime service, and the overnight Night Riviera service on the same route. Most CrossCountry trains from Scotland and the North of England via Bristol terminate at Plymouth, although a few continue to Penzance or, on summer weekends, Newquay. Local services are provided by Great Western Railway along the Cornish Main Line, often extended eastwards to and from , and beyond. Services are also provided on the Tamar Valley Line to . Passenger volume Plymouth has the third largest number of passengers starting or finishing their journey in Devon, after and . Comparing the year from April 2008 to that which started in April 2002, passenger numbers increased by 97%. However, recent years have seen little further growth. The statistics cover twelve month periods that start in April. Signalling The station was originally controlled from two signal boxes. "North Road East" was on the north side of the line to the east of the station, while "North Road West" was on the south side of the line at the west end of the station where it could control the junction of the original lines to Millbay with the new Cornwall Loop Line to Devonport. The adjacent signal boxes were at Mutley to the east, Cornwall Junction on the Millbay line, and Devonport Junction at the far end of the Cornwall Loop. Both of the North Road signal boxes were closed in November 1908 and replaced by new ones with the same names. The West box was now on the north side of the line and had 59 levers, while the East box needed just 48. They were each long. Mutley box closed at the same time, the next box now being at Mannamead on the other side of Mutley Tunnel, which had opened about three years earlier. The rebuilding work of 1938 meant more signalling alterations. On 22 January 1938, the timber West box was lifted up and moved to a new position clear of the proposed works, being brought back into use on 27 January 1938. At the other end of the station the East box was closed and a new structure built, again on the north side of the line, which was brought into