A recent letter concerning South Central's new trains questioned the issue of the necessary power supply to bring them into passenger service ("Current bun", January 30).

The Strategic Rail Authority (SRA) has taken responsibility to deliver the required power to a timetable that results in the removal of the old slam-door trains by the end of 2004 or early in 2005.

South Central's commitment to spend £856 million will replace obsolete rolling stock with modern, safer stock.

South Central is committed to putting the new trains into service as soon as possible and continues to accept new trains on a weekly basis.

The company has put in place an extensive staff training programme.

Finally, the SRA has made it clear the upgrade of the power supply for the Southern Region is a major priority. There has already been some early preparatory work.

-Vince Wild, Commercial Director, South Central