By March 2006, about 500 machines had been installed across the British railway network, and Scheidt & Bachmann expected another 500 to be bought in the next year. South West Trains' installation programme, announced in January 2006, started in April 2006 with a single machine at Walton-on-Thames and continued in several stages until mid-2008; it is the largest rollout programme to date. By the end of 2008, only five of the TOC's stations had no Ticket XPress machine. There are 18 machines at Wimbledon, 22 at Clapham Junction and 32 at London Waterloo: no station has more than this. Meanwhile, the ScotRail network was still a significant customer: Scheidt & Bachmann installed their 1,000th Ticket XPress machine at the TOC's Bridge of Allan railway station in March 2007, and in the same month a service base was opened in Scotland so that engineers could repair machines more quickly.