Megan Thomas is head of prosthetics on Holby City. Hannah King, who filmed this interview, is a researcher in BBC TV and iPlayer.
 
Like A Prayer, the episode featuring Malick’s accident, was on Tuesday, 8 October at 8pm on BBC One and BBC One HD, and 10.35pm on BBC One Scotland. It is available to watch on BBC iPlayer until Tuesday, 15 October.
 
Holby City continues on Tuesday, 15 October at 8pm on BBC One and BBC One HD, and 11.25pm on BBC One Scotland. For further programme times please see the episode guide.

Comments made by writers on the BBC TV blog are their own opinions and not necessarily those of the BBC. 

I did a couple of series of Holby, getting promoted to story editor. As story editor your job is to create and write all the regular character stories along with the lead writer. It's an amazing job - if you love being at the heart of the show, creating stories, characters and letting your imagination run wild, this is where it's at.

I then left to work on another medical BBC show, Born And Bred. Having worked on three medical shows, I'm half-convinced I've got a PhD or could at least diagnose a Coronary Artery Bypass Graft (CABG).

On returning from a couple of years' travelling, I heard they were looking for a story editor on Holby. I applied and here I am five years later, totally honoured and privileged to now be the acting series producer.

A series producer manages the show. You work alongside the line producer, managing the schedules and budgets, and with the consultant producer creating and shaping the regular characters' stories.

You oversee the process from attending the story conferences, where it all begins, right the way through production to signing of the show from a legal point of view.

Some of the things to be aware of are suicide, drug abuse - we have to be really careful we're not showing anything too distressing before eight o'clock or that there's anything people could copy, like drug use.

One of the key components of the job is just loving the show. And I do. Every time I read a script or watch an episode, I have to pinch myself to think I'm part of this all. The characters become part of your life.

I totally cried when Jac and Joseph were locked away with a killer virus on the loose and Jac finally told Joseph she loved him. Or when Elliot held Gina in his arms as she died... amazing drama.

As I've only really been series producer since we started to go to HD, I can't say my role has massively changed. I've been in my current role for five months. I do know we've had to do a lot of work on the sets to get them HD ready - every chip, hole and imperfection was totally naked.

So that was a big undertaking for our design team. The look of the show is going to be much more crisp - I guess that's the biggest change our viewers will notice.

I know that EastEnders burnt down the Vic as its launch into HD. We didn't have a big explosive storyline, if you'll pardon the pun, but what we do have is the arrival of one of our new leads, Henrik Hanssen, played by the fantastic Guy Henry.

However, Hanssen's arrival is pretty explosive in its own way. He ruffles a few Connie Beachamp-shaped feathers. There's going to be ructions at Holby City - that's all I'm going to say.

So as well as getting our sets HD-ready with regards to make-up, costume and prosthetics, I know we spent a long time choosing the right red for our HD-ready blood. That was very important to get right, because don't you just love our blood and prosthetics?

Myar Craig-Brown is acting series producer on Holby City.

Holby City moves in HD on Tuesday, 19 October at 8pm on BBC One and BBC HD.

To ensure that we have space to bring you these programmes in HD, we are also planning to begin broadcasting BBC One in HD this autumn.

That means that in the future - once you have a fully-connected HD set in your home - you will be able to enjoy all the BBC One programmes made in HD (including the vast majority of programmes shown in the evenings) without the need to change channels.

And if you don't fancy a BBC One programme, BBC HD which will operate for longer hours than it has done previously will be able to offer you an alternative including Top Gear, Later With Jools Holland, and new drama, comedy, factual and children's programmes.

These two HD channels from the BBC will be available whatever digital television platform you choose, provided, in the case of Freeview, that HD has rolled out to your area.

I don't know when we will reach a point at which all the BBC's channels are available in HD. To an extent, that may depend on you - whether you choose to buy a new HD set, or to connect up the set you already have but don't use for HD, and ultimately how far you feel that HD is the way you want to watch television.

But I do hope that giving you a choice, night after night, of different HD programmes from the BBC will help you to find something to enjoy in the best quality television can currently offer. If you'd like you can read the full story on the BBC Press Office website.

As the countdown to the World Cup gathers pace, HD is blasting out of pretty much every newspaper, billboard, and television display around. Those of you who have not yet succumbed are no doubt wondering what all the fuss is about.

The BBC will, of course, be offering a large number of ball games over June and July this year - including football from South Africa, tennis from South London, and golf from St Andrews - all on BBC HD, with every ball, every blade of grass, and every bead of sweat more visible than ever before thanks to high definition.

But for those longing for the summer of sport to be over before it has even begun, today's news hopefully makes clear HD from the BBC can offer a whole lot more.

And while we are getting ready for BBC One HD - and the new programmes that will be on it - don't forget that you can sit back and enjoy the summer on BBC HD now.

Danielle Nagler is controller of BBC HD

My character, Joseph, is in theatre with Amanda Mealing's character, Connie, and we're all under stress because we shouldn't be in there and that's where we leave off at the end of the first episode.

Joseph does take a tougher line and on this occasion Connie is the wobbly one because of her personal emotional involvement in it all.

Amanda and I have been working together for some time and we have to shift up those dynamics a little bit and I think it was nice for Amanda to play it a little more frail.

I think Amanda's at her strongest when tough schoolmarm Connie is knocked off her pedestal emotionally. She did a great job and it's kind of cool for my character to finally grow some balls.

We're actors so we always embrace the dramatic - the bigger the better! Holby really excels when there's a major incident that involves the entire cast and unites the staff of the hospital.

Big episodes like the flood are really good because they offer everyone a little more dramatic licence.

Toby Moore, our director of photography, was able to have a lot more fun than he usually does because he has to create a disaster zone - it's basically like the Towering Inferno.

You've got these beautiful beams of light across people's eyes but otherwise it's all in darkness and there's flickering lights and, as actors, all we get to see is the shadows, and then they put a little jolt in your knees to make you pretend the lift is broken.

These kinds of episodes are really fun. Personally, I relish it - and I wish we did more of them! But we have to earn them - you can't have them every week in Holby City.

They're also exciting for the audience because the stakes are higher for everyone. The emotional stakes for Connie are high, and then there's Mark (Robert Powell) trying to keep everyone together and basically everyone's in danger.

That's what we want - drama! You want instant, cold fear!

It's fun for me because my character's pretty starchy. I mean, I love Joseph dearly but he's quite suit-wearing and nothing's out of place, so it's fun for me to be in scrubs.

Ok, there's not many moments, I admit, but there's a little more chance to play the action hero, running around in scrubs and carrying trolleys down the stairs and that kind of stuff.

It's actually quite hard to do. It requires a lot of concentration when you're trying to take a stethoscope out of a bag, or a syringe, or whatever it might be, and you're doing it all on the move and hit our mark and get in the right bit of light and delivering it with the right intensity and not overcooking it.

Paradoxically, even though my character wouldn't normally touch anyone who was even slightly dirty, I inevitably get thrown into the fray to see how my character will react.

There's a real sense of hospital community as everyone's story is interwoven. Jaye Jacobs' character, Donna, has a story with a missing child and that links into everything else.

Meanwhile, we're throwing everything up in theatre and running out of power, and against the clock and other unforeseen problems. It's dramatic, exciting and involves everybody - it's a real visual treat!

Funnily enough, I think there are about three shots of water in those two episodes - and it's the secondary problems, the electricity and the lack of air-con, and all the other problems.

There are a lot of references to water but fortunately for us, we don't see much. Frankly, actors can often be the last concern filming stories like this and we often get wet and cold in the line of duty but we were spared a soaking this time!

Holby's so much fun - I've done shootouts, delivered babies in lifts, been held up in South Africa, been to Dubai. I've done a lot of running down corridors and sometimes falling down corridors when it goes wrong. More of it for Joseph please!

Luke Roberts plays Dr Joseph Byrne in Holby City

Holby City: Time and Tide Part One is available on iPlayer until Tuesday, 25 May. Part Two is available on iPlayer until Wednesday, 26 May.