GTR, which also operates the Great Northern, Southern and Gatwick Express services, says despite weeks of preparation, many trains and drivers were in the wrong location, resulting in many services being cancelled. New services from Peterborough and Cambridge through London St Pancras, Blackfriars and London Bridge, to Horsham and Brighton were particularly badly affected.\r\nGTR says it has taken delivery of all the 55 12-car and 60 eight-car class 700 dual-voltage EMUs from Siemens and has completed driving training, but the logistics of correctly positioning all the drivers and trains overnight proved too much. The new Thameslink timetable calls for the operation of an additional 400 trains per day with around 3600 services running daily, but GTR says it is currently only able to run 350 of the extra trains.\r\nFour routes are particularly badly affected:\u2022 Peterborough - Horsham\u2022 Luton - Rainham\u2022 Luton - Orpington, and\u2022 Bedford - Brighton (which is not a new route).\r\nGTR says it may take several weeks before it can introduce the complete service as planned.\r\nThere was an indication that all was not well when GTR\u2019s CEO Mr Charles Horton, warned on May 16 that passengers might expect some disruption. \u201cDue to the sheer scale of the changes, we will have to redeploy a large number of trains and crews and services may not run at normal times during the introductory phase, although the impact on peak time services during the transition will be minimal,\u201d Horton said.\r\n\u201cIntroduction of the new timetables is a major milestone in the delivery of RailPlan 20\/20, our programme to modernise rail services, taking advantage of the new infrastructure and trains provided by the government\u2019s \u00a37bn Thameslink Programme,\u201d he continued. This included the \u00a31bn reconstruction of London Bridge station and tracks in the area.