Question: Who owned the British train operating company that was the last operator of the London railway station which was replaced by the new Thameslink platforms at St Pancras in December 2007?

full_context: Document 1: Victoria station (British Columbia): The Victoria station was in downtown Victoria, British Columbia, on the east end of the Johnson Street Bridge. The station was the southern terminus for Via Rail's Victoria–Courtenay train dayliner service, which has been indefinitely suspended since 2011. As part of the Johnson Street Bridge replacement project, the rail link across the Inner Harbour was removed and the station dismantled. If rail service on the line was to resume, its southern terminus would now be on the far (western) side of the Johnson Street Bridge.
Document 2: Virgin Trains East Coast: Virgin Trains East Coast is a train operating company in the United Kingdom that operates the InterCity East Coast franchise on the East Coast Main Line between London, Yorkshire, the North East and Scotland. It commenced operations on 1 March 2015, taking over from East Coast. It is a joint venture between Stagecoach (90%) and Virgin Group (10%).
Document 3: King's Cross Thameslink railway station: King's Cross Thameslink station is a closed railway station in central London, England. It served the Thameslink route but was replaced by new Thameslink platforms at St Pancras in December 2007. The last operator of the station was First Capital Connect. The site is on Pentonville Road, about 160 yd from King's Cross station.
Document 4: Govia Thameslink Railway: Govia Thameslink Railway (GTR) is a train operating company that operates the Thameslink, Southern and Great Northern (TSGN) rail franchise in England. Within the franchise, GTR runs the Thameslink, Great Northern, Southern and Gatwick Express airport services.
Document 5: St Pancras Basin: The St Pancras Basin, also known as St Pancras Yacht Basin, is part of the Regent's Canal in the London Borough of Camden, England, slightly to the west of St Pancras Lock. Formerly known as the "Midland Railway Basin", the canal basin is owned by Canal & River Trust, and since 1958 has been home to the St Pancras Cruising Club. The basin is affected by the large-scale developments in progress, related to King's Cross Central.
Document 6: Kent Road (Metro-North station): Kent Road was a station on the Danbury Branch of the New Haven Line. Penn Central opened the station in 1976 to serve Perkin-Elmer's headquarters in Wilton. It was located on the Wilton-Norwalk line, 46.2 mi from Grand Central Terminal, south of a grade crossing with Kent Road. The New Haven Railroad previously had a station immediately north of the crossing. The station consisted of a low-level platform and a small shelter. Metro-North discontinued service here on January 16, 1994. It is notable for being the last station on the New Haven Line to be abandoned, and the only one closed during the Metro-North era. No station structures remain at the site.
Document 7: Thameslink and Great Northern: Thameslink and Great Northern are the brand names used by the Govia Thameslink Railway train operating company on the Thameslink and Great Northern routes of the Thameslink, Southern and Great Northern franchise, previously operated by First Capital Connect.
Document 8: Charing Cross tube station: Charing Cross (sometimes informally abbreviated as Charing X) is a London Underground station at Charing Cross in the City of Westminster with entrances located in Trafalgar Square and The Strand. The station is served by the Northern and Bakerloo lines and provides an interchange with the National Rail network at Charing Cross station. On the Northern line it is between Embankment and Leicester Square stations on the Charing Cross branch, and on the Bakerloo line it is between Embankment and Piccadilly Circus stations. The station is in Travelcard Zone 1. The station was served by the Jubilee line between 1979 and 1999, acting as the southern terminus of the line during that period.
Document 9: Thameslink, Southern and Great Northern franchise: Thameslink, Southern and Great Northern (TSGN) is a management contract for the provision of passenger services on the Thameslink and Great Northern routes to Bedford , Luton , Peterborough , King's Lynn , Cambridge , London King's Cross , London Moorgate, Sutton, Wimbledon and Brighton, as well as the whole Southern network (including the Gatwick Express) and the jointly operated First Capital Connect Southeastern services (for example the Kentish Town - Sevenoaks via Catford ), which were added to the franchise on 25 July 2015, with the Southern and Gatwick Express brands retained.
Document 10: Southern (Govia Thameslink Railway): Southern is the brand name used by the Govia Thameslink Railway (GTR) train operating company on the Southern routes of the Thameslink, Southern and Great Northern franchise in England. It is a subsidiary of Govia, a joint venture between transport groups Go-Ahead and Keolis, and has operated the South Central rail franchise since August 2001 and the Gatwick Express service since June 2008. In July 2015, the franchisee was subsumed into GTR, but the Southern and Gatwick Express brand identities were retained alongside those of Thameslink and Great Northern.
Document 11: First Capital Connect: First Capital Connect (FCC) was a British train operating company, owned by FirstGroup, that operated the Thameslink Great Northern franchise from April 2006 to September 2014.
Document 12: City Car Club: City Car Club, now Enterprise Car Club, is a British car club operator. Established in 2000 and with around 840 vehicles, it is the oldest and one of the largest car clubs operating at a national scale in the country. In April 2015 City Car Club was acquired by Enterprise Rent-A-Car, and was renamed Enterprise Car Club.
Document 13: Holloway and Caledonian Road railway station: Holloway & Caledonian Road railway station was a station opened in 1852 by the Great Northern Railway in Holloway as the first station north of King's Cross when that station opened to replace the temporary terminus at Maiden Lane. As with many other inner London stations, it lost use to later public transport developments, here particularly the tram and the underground Great Northern, Piccadilly and Brompton Railway (now the London Underground Piccadilly line) which opened its adjacent Holloway Road station in 1906. Holloway & Caledonian Road station was closed in 1915 and has been demolished.
Document 14: Network SouthCentral: Network SouthCentral (NSC) was a shadow franchise that existed from 4 February 1994 to 13 October 1996, when Connex South Central took over the running of the franchise. The franchise is now part of the Thameslink, Southern and Great Northern franchise operated by Govia Thameslink Railway under the Southern brand. As with all shadow franchises, Network SouthCentral was a wholly owned subsidiary of the British Railways Board.
Document 15: Association of British Commuters: The Association of British Commuters (ABC) is a UK passenger lobby group for people who commute. It was formed in September 2016 by a group of passengers, disaffected by Govia Thameslink Railway's service on the Southern routes of the Thameslink, Southern and Great Northern franchise, after months of delays, cancellations, overcrowded conditions, and strikes.
ground_truth: FirstGroup