In the context of the input sentence, determine the relationship between 'Inmarsat' and 'LONDON'.
Options: member of, manufacturer, headquarters location, legal form

LONDON (ShareCast) - (ShareCast News) - Inmarsat (Other OTC: IMASF - news ) confirmed that the launch of its third satellite in the Global Express programme, I-5 F3, has been scheduled at the Baikonur Cosmodrome in Kazakhstan on Friday 28 August.
headquarters location