Stations received using Opera4 mode on the 477kHz band yesterday evening were: G0NBD, G4WGT, G8HUH, PA0A, PA3BHT and PA3FNY.
Note that Opera4 should be received whilst tuned to 477kHz USB (in an SSB bandwidth); the actual transmissions are between 478.6 and 478.8kHz. The software is free from the link above.