From National Rail site
Passenger Information from South Eastern Trains Time Reported: 09:15 TOC/s Affected: South Eastern Trains Description: The National Union of Rail Maritime and Transport Workers (RMT) has advised that its ticket office staff members will be striking on Monday 5th December 2005. South Eastern Trains expect many ticket offices to be open as usual on Monday but its likely queues may be longer than usual and passengers should allow extra time for their journeys. It is recommended, where possible, passengers buy tickets or renew their season tickets in advance. Season ticket renewals are available to purchase from the afternoon of Friday 2nd December at any ticket office. It is expected that train services will not be affected.