When I was looking for Epos ES range speakers I did a little research to see what was made and when. Mostly driven by trying to find out which speakers in the ES range Robin Marshall designed and which were done after he'd left. Below is what I put together from reading articles and the related brochures. I would be interested in any corrections and extra info if anyone has it.
*As to which speaker is based on which I'm now not as confident, as although Epos passed on this info in brochures at the time, it's entirely possible they were not correct.
Epos & Related Companies
1983 Robin Marshall creates Epos.
1987 TGI PLC group (UK) buys Mordaunt-Short.
1988 Mordaunt-Short buys Epos.
1994 Audio Partnership Plc founded, closely related to but not owned by, Richer Sounds. All manufacturing done in China. Owns Cambridge Audio.
1999 Creek buys Epos.
1999 Mordaunt-Short bought by Audio Partnership Plc.
2020 Fink buys Epos, Karl-Heinz Fink founder of German speaker firm FinkTeam.
ES Speaker Range Release Dates
1984 ES 20
1986 ES 14
1990 ES 11
1996 ES 12
1996 ES 22 (based on ES14*)
1996 ES 25 (based on ES11*)
1999(?) ES 30 (based on ES12*)