Editing High Speed 1 (section)

=== Network Rail (High Speed) Ltd ===
[[File:High Speed 1 - geograph.org.uk - 1735870.jpg|thumb|HS1 near the village of [[Hothfield]] in Kent.]]
HS1 Ltd is responsible for overall managing and running of the line – along with the international railway stations at St Pancras, Stratford, Ashford and Ebbsfleet<ref>{{cite web|url=http://www.highspeed1.com/|title=High Speed One|publisher=HS1 Ltd|access-date=10 January 2011|archive-date=4 January 2011|archive-url=https://web.archive.org/web/20110104073459/http://www.highspeed1.com/|url-status=live}}</ref> – with responsibility for the infrastructure itself sub-contracted to Network Rail (High Speed) Ltd (formerly known as Network Rail (CTRL) acting as the controller and infrastructure manager.<ref>{{cite web|url=http://www.rail-reg.gov.uk/upload/pdf/tpws-excemption-letter-nr-030810.pdf |archive-url=http://webarchive.nationalarchives.gov.uk/20101111060633/http://www.rail-reg.gov.uk/upload/pdf/tpws-excemption-letter-nr-030810.pdf |url-status=dead |archive-date=11 November 2010 |work=Railway Safety Regulations 1999 |title=Exemption from the Fitment of an Automatic Train Protection System for Certain Types of Train on Network Rail (High Speed) Ltd Controlled Infrastructure |series=Understanding the Meaning of Test Trains |page=3 |first=Andrew G.W. |last=Stretton |date=3 August 2010 |quote=... is controlled by Network Rail (High Speed) Ltd who, as infrastructure manager ... |access-date=16 January 2010 |format=covering letter |publisher=Office of Rail Regulation }}</ref> Network Rail (CTRL) Limited was created as a subsidiary of [[Network Rail]] on 26 September 2003 for £57&nbsp;million to take over the assets of the CTRL renewal and maintenance operations.<ref name="nril-ar2004">{{cite report|url=http://www.networkrail.co.uk/browse%20documents/annual%20report%20and%20accounts/2004/2004networkrailinfrastructurelimitedannual%20report.pdf|page=39|title=Annual Report and Accounts|year=2004|publisher=Network Rail Infrastructure Limited|access-date=7 June 2011|archive-date=9 December 2010|archive-url=https://web.archive.org/web/20101209173106/http://www.networkrail.co.uk/browse%20documents/annual%20report%20and%20accounts/2004/2004networkrailinfrastructurelimitedannual%20report.pdf|url-status=dead}}</ref> Network Rail (High Speed) operates engineering, track maintenance machines, rescue locomotives, and infrastructure- and test trains.<ref>{{cite web|url=http://www.rail-reg.gov.uk/upload/pdf/tpws-exemption-nr-040610.pdf |archive-url=https://web.archive.org/web/20101111060616/http://www.rail-reg.gov.uk/upload/pdf/tpws-exemption-nr-040610.pdf |url-status=dead |archive-date=11 November 2010 |author=Deputy Chief Inspector of Railways |format=Certificate of Exemption |title=Infrastructure Controller: Network Rail (High Speed) Ltd |quote=Network Rail (High Speed) is exempt … in relation to the operation on the Channel Tunnel Rail Link of the following classes of trains: ... |date=4 June 2010 |access-date=16 January 2012 |publisher=Office of Rail Regulation }}</ref> Eurotunnel's subsidiary [[Europorte 2]] operates its [[Eurotunnel Class 0001]] (Krupp/[[MaK 6400]]) rescue locomotives on the line when required.<ref>{{cite web|url=http://www.rail-reg.gov.uk/upload/pdf/tpws-exemption-europorte2-080210.pdf |archive-url=http://webarchive.nationalarchives.gov.uk/20100303202356/http://www.rail-reg.gov.uk/upload/pdf/tpws-exemption-europorte2-080210.pdf |url-status=dead |archive-date=3 March 2010 |title=Train Operators Certificate |format=Certificate of Exemption |page=1 |author=Deputy Director of Railway Safety |publisher=Office of Rail Regulation |date=8 February 2010 |access-date=16 January 2011 }}</ref>

Various [[track geometry car|track recording trains]] run as necessary, including visits by the [[New Measurement Train]]. On the night of 4/5 May 2011 the [[SNCF TGV Iris 320]] laboratory train took over, being hauled from Coquelles to St Pancras and back, towed by Eurotunnel Krupp locomotives numbers 4 and 5.<ref name="rail-iris320">{{cite journal|url=http://www.railwaymagazine.co.uk/news/tgv-in-secret-visit-to-uk |title=TGV in secret visit to UK |journal=[[The Railway Magazine]] |date=2 June 2011 |access-date=7 June 2011 |first=Chris |last=Milner |url-status=dead |archive-url=https://web.archive.org/web/20110606132212/http://www.railwaymagazine.co.uk/news/tgv-in-secret-visit-to-uk |archive-date=6 June 2011 |df=dmy-all }}</ref> The Iris 320 runs for Network Rail (High Speed) are an extension of the {{convert|100|km/h|0|abbr=on}} monitoring cycle already undertaken by SNCF International since December 2010 for Eurotunnel every two months.<ref name="sncf-iris320-uk">{{cite web|url=http://www.sncf-international.net/us/page.php?id=21-GB|title=United Kingdom: Track Geometry Checks|publisher=SNCF International|access-date=7 June 2011|quote=SNCF International … with Eurotunnel and .. Network-Rail (High Speed) are … carrying out Eurotunnel monitoring runs using the Iris 320 train and extending them as far as London St Pancras.|url-status=dead|archive-url=https://web.archive.org/web/20110812134923/http://www.sncf-international.net/us/page.php?id=21-GB|archive-date=12 August 2011|df=dmy-all}}</ref><ref name="eurotunnel-iris320">{{cite report|chapter-url=http://www.eurotunnelgroup.com/uploadedFiles/assets-uk/Shareholders-Investors/Publication/Annual-Review/RA2010-UK-GroupeEurotunnelSA.pdf|title=Inspecting the infrastructure at 100&nbsp;km/h|chapter=Maintenance|work=Annual Report|year=2010|publisher=Eurotunnel Group|page=24|access-date=7 June 2011|quote=IRIS 320 measuring train … since December 2010, … inspecting the Channel Tunnel, pulled by a Eurotunnel diesel locomotive at 100 km/h … every two months|archive-url=https://web.archive.org/web/20110807192552/http://www.eurotunnelgroup.com/uploadedFiles/assets-uk/Shareholders-Investors/Publication/Annual-Review/RA2010-UK-GroupeEurotunnelSA.pdf|archive-date=7 August 2011|url-status=dead}}</ref>