1) Go into On Demand/iPlayer via the HOME button and select a pgm to watch.
During the play press the I(info) button. When info appears on screen press BACK. You are dropped back to the iPlayer home page with an option to resume play.
2) Go into iPlayer via the "Watch from start" option in the EPG.
During the play press the I(info) button. When info appears on screen press BACK. You are dropped back to the EPG, and to resume you again have to select that pgm on the EPG and again "Watch from start" option.
3) During iPlayer play in (2), select "Recordings" on the R/C. The Recording GUI is shown with the iPlayer pgm in the PIP window, but on pressing BACK in the Recordings display again you are dropped back to the EPG, and to resume you again have to select that pgm on the EPG and again "Watch from start" option.
However, in (2) and (3) there is a flaw. If the live pgm you selected has now ended the "Watch from start" option is no longer available and often the pgm is not yet on On Demand/iPlayer via HOME.
The lesson is... don't press BACK, RECORDINGS or GUIDE or many other keys during "Watch from start" play. Minor but irritating.