It's time for episode two of ITV's travel show focusing on one of the country's most popular transport hubs, Heathrow Airport .

Last week viewers saw an epic meltdown of a young traveller who missed her connection and joined police on the plane to make an arrest.

So, what does this week's episode Heathrow: Britan's Busiest Airport have in store?

Video Loading

Viewers will be introduced to senior airport fire manager, Gary Barthram, as well as go down under in the 500 miles labyrinth of underground pipes.

The episode will focus on the challenges of transferring in the five-square mile airport, with 200 gates and four terminals.

It will also feature sniffer dogs Buster and Paddy, part of the Metropolitan Police dog unit looking for explosives in the airport, on a training exercise.

Meet some of the team set to air in episode two:

Jawad Khilji - passenger experience manager (PEM) at Terminal 4

Passenger Experience Manager Jawad Khilji in Terminal 4

Mr Khilji, originally from Birmingham moved to Harrow in 2001 and has never looked back on after starting his career at the airport as a Trolley Team Leader in 2006.

During the episode he battles a language barrier to get 72 Chinese Tourists to their connecting flights to Lisbon. The problem is there's only one translator and the group gets split in two.

He said: “A third of all passengers neither begin nor end their journey at Heathrow - they’re connecting passengers.

"The logistics of that are enormous and I’m looking forward to showing Britain how we meet that challenge and deliver a great service for our passengers.

"As a PEM, not one day is the same as the other.

"You never know what to expect before a shift, and I really enjoy that challenge.”

Jonathan Welford - water services engineering technician

Heathrow's Water Services engineers Jon, Vic and Scott

Family man Jon from Slough has been working in the less glamorous underground tunnels at Heathrow.

You will meet the man himself along with colleagues Vic and Scott who pull the short straw and have to clean a sewage tank at midnight.

He said: “I’ve worked on Heathrow’s 500-mile labyrinth of underground pipes for over 17 years now, so I’ve come to know the system extremely well.

"As an engineering technician, I’m at the forefront of airport efficiency, ensuring passengers are given the best service in the world.

"And as a father of two, I’m really looking forward to showing my children what a typical day at the airport looks like and the job opportunities that are right at their doorstep.”

Outside of work, the father-of-two is busy renovating his home in Burnham and enjoys walking and spending time with his family.

Scott Lane - duty engineer

The West Ham supporter has notched up an impressive 14 years at the west London hub airport, where he started as an apprentice.

Mr Lane who lives in Slough said: “I started as an engineering apprentice in September 2003 and have worked my way up from there.

"When something goes wrong with one of our assets, that’s when my team is really put through its paces.

"I enjoy the diagnostic fault finding and solution building. Outside of work I like kayaking and am a keen West Ham supporter.”

Episode 2 focuses on the challenges of transferring in the five-square mile airport, with 200 gates and four terminals.

James Cook - duty engineer

He started out as an apprentice and now has 10 years experience as a duty engineer.

Mr Cook said: “The best bit of the job for me is the variety of work involved – electrical, mechanical, controls, electronics – within a variety of environments including airside, landside, underground and up in the air.

"I never know what a day will be like when I turn up in the morning, but I’m always ready and armed with the knowledge and tools to tackle any challenge."

Outside of work he enjoys hill walking, plays music and is also busy doing some renovations.

Gary Barthram - senior airport fire manager

Heathrow Britain's Busiest Airport - Episode 2 on Wednesday May 17

The man from Surrey transferred from Stansted in 1995 and has spent 22 years at Heathrow.

Along with his crew, they attend domestic fire calls, road traffic collisions and serious medical calls within the airport boundary.

He said: “My job is incredibly diverse and within a really dynamic and interesting location.

"Being able to lead the teams that serve the airport community when there is an emergency or an incident is something I love.

"I know if a serious situation goes as we plan, lives can be saved. "

Last week’s "Arrivals" episode attracted the highest number of viewers for an opening episode - with 3.7million viewers.

The three-part programme was filmed over five months, with staff from plumbers to pilots, each in a race to make sure millions of people and thousands of planes take off and land on time.

Episode two is set to air on Wednesday May 17 at 9pm on ITV .

Keep up to date with the latest news in west London via the free getwestlondon app.

You can even set it to receive push notifications for all the breaking news in your area

Available to download from the App Store or Google Play for Android now!