Published Monday, 09 June 2014
Collabro chat to This Morning. (© Rex Features)
The five-piece vocal group were voted the champions of BGT 2014 following the live final on Saturday.
They were crowned the winners ahead of fellow top three acts - classical singer Lucy Kay and bookies favourite Bars & Melody - after they performed a "faultless" rendition of Stars from the musical Les Miserables.
"The whole experience was incredible," group member Jamie told This Morning's Phillip and Holly on Monday.
"It was so much emotional the whole time. The pressure of being in front of so many people...anything can go wrong when it's live and (the final) was the biggest performance of our lives."
Saturday's final boasted a number of variety acts, with judges Simon Cowell, Amanda Holden, Alesha Dixon and David Walliams admitting they had no idea who would be voted the winner.
"(Bars & Melody) were the bookies favourites to win and we definitely thought they had it," said Richard. "And then Lucy came out with just the most incredible performance.
"We just weren't sure, we didn't know where we would come. It was such a good competition, everyone was so good in their own field and it was absolutely phenomenal."
During the group's first audition in February, they told the judges they had only formed a month earlier.
Jamie explained to Phillip and Holly they weren't sure if putting together a musical theatre inspired group was going to work.
He said: "It could have gone so wrong because we didn't know each other and when you put five guys in a room who all want the same thing and who are all very passionate, it could go one of two ways.
"And for us it went the right way and we knew we had something special straight away."
Collabro have now won a £250,000 cash prize and a spot in the line-up for the upcoming Royal Variety Performance.
But fans are now asking whether or not they are going to record and release an album.
"We are just going with the flow and seeing what happens, but that would be nice," said Matt.
© UTV News