To accompany the RSC's King and Country cycle at the Barbican there has been a series of Q&A sessions about each of the plays (Richard II, Henry IV and Henry V) with actors who've played the lead roles. The sessions are recorded for the RSC archive and yesterday was the turn of Richard II with David Tennant, the RSC's current Richard and Jonathan Slinger who played the part in 2007. Emma Smith of Oxford University steered the discussion.
These are a few of the interesting points that came up.
On the context of doing the play as part of a series and how that informs the performance:
When David Tennant first played Richard II in 2013 it was a stand alone play but it is now being performed as the first of a tetralogy. He said that even though he's only in the first play he is now more aware of certain moments that cast forward to the later plays. There are moments that have extra frisson, for example Richard's warning that Northumberland has betrayed one King and will do so again. (He couldn't remember the lines at first to illustrate and chided himself as he'd only done the play before but when he did remember them got a round of applause. He later congratulated Jonathan on reciting lines easily nearly 10 years on).