Over in the United States, the same albums was an ever improving performance in the Billboard 200 with "On The Third Day" attaining a respectable #52, "Eldorado" deservedly breaching the Top 20 in reaching #16 and "Face The Music" making the breakthrough into the Top 10, also receiving RIAA Gold certification. Doubtless this was the fruit of ELO's many extended tours in the US and their success would continue thereafter for several years.
Yet, back in the UK, despite their reputation for delivering fantastic gigs, ELO struggled in terms of album sales due in part to their change of record label from Harvest/EMI to Warner Bros. to Jet/Polydor and their concentration on the American market (whilst they remained with United Artists during that time). This tragedy was corrected (in a fashion) when all three albums eventually made the UK Album Chart in late 1978 as part of the boxed set "Three Light Years" (JETBX1) whilst managing to reach #38 in the wake of the amazing success of "Out Of The Blue" and those celebrated spaceship dates.
ELO album failed to chart in the UK thereafter save for this trio (ironically) of ELO compilations: "ELO's Greatest Hits Volume Two" (1992), "Ticket To The Moon: The Very Best Of Electric Light Orchestra" (2007) and "The Essential Electric Light Orchestra" (2011). Looking back from here in Yours Truly 2017, it is still quite galling to think that the aforementioned Electric Light Orchestra studio albums failed to chart upon release in the UK - even their critically acclaimed concept masterpiece "Eldorado" was considered a commercial flop. Surprising ain't the word. Undeserved is the better adjective.
Until next "Time" in the ELO (and related) Universe ... KJS ... 15-March-2017