The high luminosity galactic X-ray sources, apart from the supernovae remnants, probably all exist in multiple star systems in which matter from a normal star is being transferred to a compact object such as a white dwarf, neutron star or black hole. Recent results, obtained with the Ariel 5 and Copernicus satellites, are presented. A number of sources have been studied over extended periods in order to measure the regular periodicities in their X-ray emission. Observations also included are of the Cygnus X-1 source, which is probably the first black hole discovered in our galaxy. X-ray emission, coincident with a radio outburst, from a nearby bright star HR1099 is also reported.