Jesus Enrique Rosas, who refers to himself as “The Body Language Guy”, has claimed three particular signs display more than a mere wedding-day nervousness. He claimed the Duke of Cambridge showed “actual panic signals and could not hide them”.

       In a video posted on YouTube, Mr Rosas claimed Prince William issued his first warning sign when walking with his brother to the church in which the wedding ceremony was about to take place.

       Here, he said, Prince Harry appeared confident and was engaging comfortably with the gathered public.

       But in what Mr Rosa called an “interesting” signal, there appeared to be “a bit of stiffness to William’s gait”.

       Mr Rosa dismissed the idea that this could be a result of nervousness due to being surrounded by members of the public.

       He claimed that having been brought up in the public eye, “this shouldn’t have been a big deal for him”.

       Viewed alone, this behaviour was not enough to constitute a “panic signal”.

       Instead, Mr Rosa said he first believed that something was amiss when he noticed Prince William “releasing his stress” with his right hand – stretching and then releasing his fingers – “no less than five times”.

       He believes that the Duke was attempting here to relax the body. He conceded, however, that Prince William may simply have found his gloves to be uncomfortable.

       He claimed the next “signal” was delivered in the church when the brothers were sitting next to each other and engaging in conversation.

       READ MORE: Meghan's values 'haven't changed' despite marrying into Royal Family

       Here, Mr Rosa highlighted that “we saw a totally different William when he was looking away from Harry”.

       Prince William appeared comfortable when he was facing his brother, but when looking away he “clenched his jaw”.

       Mr Rosa claims this is another stress-relieving technique, similar to the stretching and releasing of the fingers.

       Finally, and perhaps most significantly, Mr Rosa noted that Prince William occasionally looked in the direction of Prince Harry but without moving his head.

       DON'T MISS:

       Prince Harry opens up in heartfelt plea [REPORT]

       Fury as EU rules BAN English oaks from being planted for Queen Jubilee [REVEAL]

       The lobbying scandal that won't go away ？ EXPRESS COMMENT [OPINION]

       He said: “When you use just your eyes to look to one side, it can be a very subtle signal of nervousness, or being uncomfortable or trying not to draw much attention towards you.”

       He noted that, at the same time, Prince William swallowed “hard” and pressed his lips – yet more signals of nervousness.

       The conversation between the two princes could not be heard, so Mr Rosa’s assertions are hard – if at all possible – to contextualise.

       But Mr Rosa claimed that, however small these “signals” are, they enable one to “reach solid conclusions”. He joked: “Maybe William already knew that there was going to be a bumpy ride.”

       Royal biographer Robert Lacey told Page Six earlier this week that the relationship between the two brothers remains “poor, definitely poor”.

       He said: “There is no immediate possibility of any reconciliation.

       “I mean, it’s not wanted on either side. Too many bitter things have been said.”