For loads of general chat about the daytime drama, head over to the main interview if you haven't already.
Here, though, Soap Scoop presents some exclusive teasers from Peter about what's in store for some of the most popular characters…
Can you tell us a bit about what's in store for the new characters Freya and Kevin? Are they all they appear, or could they have secrets?
"Can I just point out here that the title of their first episode, 'The Asian and the Lesbian' was deliberately misleading. This may give you some indication as to where we're going with them. Of course they both have interesting pasts, and interesting futures - we design characters pre-loaded with areas to explore. They're both proving to be interesting and viable candidates for the permanent post, we'll just have to see who makes it…"
Daniel and Zara remain a very popular pairing! Can you tell us anything about what's in store for them in the coming months?
"Well, you can see the signs already. Are they ready for parenthood? Is Zara trying to conceive because it's her last chance or because she really wants a child? And if she has one, will she regret it? If she gets pregnant, how will she behave? Daniel makes a great play of being experienced in all this, but that's a bit of a con… the possibilities are endless with these two and you can bet we're going to be having a lot of fun with them."
"A disgraced daughter doing community service for shoplifting is Rob Hollins's worst nightmare. He's so appalled that the daughter he thought he had brought up to be a decent, honest citizen has lied so often. He's taking it very personally, something that needs some examination. Meanwhile, Jack is going to be spreading his wings and taking some opportunities to explore the world of crime - he's going to prove to be another pain in the neck for poor Rob. For Karen, it's about trying to keep the family united and enemies at bay, but later on in the series, she's going to have some extremely good news that could change everything for her…"
Heston is another popular character, so is there any interesting stuff on the horizon for him?
"I will admit, we've neglected Heston a little this year and we were concerned that he was becoming too sad. He'd lost his mojo a little. So things are going to be looking up for him as he joins Letherbridge Light Opera and meets a new lady friend. This will take us into a very big story around Christmas that I hope is going to keep everyone gripped."
Can you give us any other teasers on what's ahead in the coming months?
"You'll notice Daniel disappears for a while in October - this is because Matt Chambers will be directing a block of episodes. They transmit the same month so look out for his debut. He's currently in pre-production, hunting for locations and auditioning actors as well as slipping into Daniel's slick suits for a couple of scenes with Elisabeth. And there's a camera crew following him round for a behind the scenes documentary. Busy man!
"Heston as KoKo in the Mikado is a treat, as is Freya as an octopus. Look out for paintballing, nude modelling, zorbing, Mrs T sings, Elaine gets another disastrous boyfriend (what is her problem?!), Julia's family begins to fracture, Kevin ends up in jail, Imogen becomes a Misfit, Jack dices with death, Zara and Daniel face the police, and as for Cherry and Jimmi - things are going to get very dark indeed. All this and Brian Blessed returns!"
Doctors returns following Ascot and Wimbledon on Monday at 1.45pm on BBC One.
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