The couple, who first met at Cardiff Journalism School
in 2004, said they have ploughed "tens of thousands of pounds" into paying for private treatment after having just one free on the NHS in London.
Buerk, 56, who trained at Cardiff Journalism School
, is following in the footsteps of fellow BBC journalists John Simpson and Kate Adie who have enjoyed success with their memoirs.
I believe journalism is a wonderful skilland Cardiff journalism school
is the best in the country."
Professor Justin Lewis of Cardiff Journalism School
suggested that, being a Welsh, rather than British programme, may have made it more appealing in the Middle East as it was less associated in the public mind with the wars in Iraq and Afghanistan.
She's enabled me to move down to Cardiff and do a postgraduate degree in broadcast journalism at Cardiff Journalism School
and I will miss her so much."
Professor Justin Lewis, head of Cardiff Journalism School
, said making Welsh-language programmes accessible to as many people as possible could only be a good thing.
"We have been given some really nice wet food by one company so will save most of it to enjoy on Christmas Day," said Nick, who this year graduated from Cardiff Journalism School
. "Throughout the race we will be rowing two hours on and two hours off but we'll take a little time off on Christmas Day and perhaps go for a swim - I quite fancy swimming with the thought of three miles of ocean underneath me.
Elliot Pill, course director for Cardiff Journalism School
's MA in public relations, believes the high Welsh viewing figures could have been partly driven by the draw.
Nick, who is currently studying at Cardiff Journalism School
, said he and Richard were undergoing a "punishing training routine" set by their sponsors at Esporta gym.
However, Tim Holmes, director of the post-graduate magazines course at Cardiff Journalism School
questioned the ability of the teen magazine market, which is in decline, to influence its readers with images of perfect white smiles.
Bill Turnbull said: "I have very fond memories of Cardiff, having lived here 30 years ago when I did my journalism training at the Cardiff Journalism School
The Cardiff Journalism School
student plans to move to Doha in September to take up a job with Arabic news channel Al-Jazeera.