Don't think there are any direct flights.
You could easily go MAN-LGW-BLQ with BA
You could also go via CDG (AF), FRA (LH), AMS (KL), CPH (SK) or Stansted (FR)
A Quick search on Opodo gives the cheapest Alitalia MAN-CDG-BLQ £175, followed by British Airways MAN-LGW-BLQ at £190
Good Luck
T'Bug