Insignia of the JMC
The Jupiter Mining Corporation or JMC was the section of the Space Corps that licensed ships, like Red Dwarf, to conduct mining operations in deep space.
They made cut-backs before Red Dwarf left Earth for the last time, removing their Quark-level matter/anti-matter engine core and causing the ship to be laid out differently, including removing a karaoke bar on G-deck. (RD: Back in the Red I)
The JMC building in London was well known to Lister, as was the Taj Mahal tandoori restaurant behind it. (RD: Tikka to Ride)
Eventually, Red Dwarf made contact with the JMC mainframe. This computer was able to issue orders and supervise JMC vessels without Human input. (RD: Trojan)
Trivia
The Jupiter Mining Corporation was a mining company that had an office at room 02-842 on the Promenade of Starbase Deep Space 9 in Star Trek: Deep Space Nine This establishment, which seems to be named after or originate from Jupiter, is listed on a Promenade directory map seen in many episodes of DS9. It is a deliberate reference to Red Dwarf.