Summary of interview, scribbled typed notes while working.
Sparks he said JP wouldn't let him keep a finger in the pie after he left.
Here you go - it may or may not make sense.
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Adrian thinks that series 2 got it right 
and S1 was written for an earlier slot so it was odd. He wanted to develop 'serial' element in series 2 (story of week, but series arc bubbling away in background) which they were told not to in series1. Wanted to do best of both worlds in S2. Thinking of 3rd season was they’d gone too far in ‘story of week’ approach, so make it more story-arc and fewer individual episode stories.
Adrian would like episodes to go out on iplayer before transmission (as per Netflix) but not his decision. Don’t actually finish the show (post production) before start of transmission. Fans could watch on iplayer and build up publicity in advance of transmission. But that is BBC decision. Scheduling of S2 – not happy but no control over it. Originally scheduled to finish before Comic Relief and then football replays bumped it further back and show suffered from interruptions.
Series 3 filming on 27th April, not doing it. After last season was knackered and wanted break. Scheduling an issue, but would have carried on if he’d had a break between end of S2 and development of S3. He still regards it as his show because it was his concept and he developed the characters. Trying not to have anything to do with it, and JessP would probably not let him stick fingers in the pie anyway. Feels he is moving on at a high point.
Though Rochefort was like Iago in Othello. How much character development came from MW? None – did what he was told 
Told him that Rochefort would have tragic aspect (ie. Loved/obsessed with queen and it all went wrong) Could write to actor’s strengths, but actor didn’t have say in character development.
Were they ever worried about going to far? Not as lighthearted, eased back on humour because topic were darker, but tried to keep banter in between characters. Felt S1 was more confused in tone – too humourous in places.
New baddie after Richelieu, wanted less ambiguous character – out and out baddie [I think that's what he said wan't paying full attention], was always planned to be one season only.
What input into season 3? Can’t say anything about Series 3.Completely different again, completely different feel. He’s aware of what’s being done – imaginative and clever, natural development from S2. At war now, so that's a major factor in S3 though not necessarily in the way you expect.
‘The Return’ was very tricky to shoot on TV budget most explicitly western episode they’re ever likely to do.
Balance between historical accuracy and modern script – hard to keep balance. Try to keep the background right, if not the main stories. Use history as inspiration. Try to keep costume and social situation accurate. Don’t have budget to populate palace with all the courtiers they’d have had.
WW gets a name check!!!!! Sexual violence against women? (General ‘We want more humour’ tone) He doesn’t think there’s an excessive amount of sexual violence against women 
thinks whole issue is difficult because women were in very vulnerable position then (concentrated on Rochefort, prostitute/queen) prostitute scene used to show how crazy Rochefort was. Nothing gratuitous, all psychologically relevant. [misses point]
All characters had a bit of a story arc – not like it S1. Difficult to give all regular actors enough to do? Very difficult because so many regular characters.
Does the fans ‘investment’ in characters affect what they do? No, don’t change storylines for them ‘acutely aware of social media and what fans are saying’. Interested in what they think, but not to affect the story. Do responses not even affect subsequent theories? (AH is more interested in fans response than critics) Wanted to make Milady more human, and raise possibility that Athos might have been wrong about her all along – that’s left ambiguous on purpose.
Reaction to Aramis – musketeers horrified by situation with Anne, but supportive – one of AH’s favourite scenes, all consistent in their characters. Actors have innate understanding of their characters.
Is this closure for Anne/Aramis? Closure in one sense, can’t say exactly. But never entirely closed because they have a son together. Romantic side is probably done, he thinks.
Tried to close storylines because no guarantee of 3rd series while writing
Riding off after Aramis – were riders really racing – probably, they’re proficient riders so if given licence to go at full gallop, then they will. Plus the like competing against each other.
Porthos’ arc – liked gunpowder episode because made Porthos think more about his roots and set up for family background epiode. Develops the father/son relationship with Treville. Storyline about what father you want – the one who is, or the one who acts like one. AH wants to get rights to ‘Black Count’ if they lapse in Hollywood.
Fans are the best thing about writing genre TV