Prince Harry admits he struggles with the pressure of walking in the Queen's 'remarkable' footsteps in a candid new documentary

Prince Harry has admitted he finds it 'hard' to cope with the pressure that comes with being related to the Queen in an interview released for the first time today.

He said he often feels as though other members of the Royal family are simply 'walking in her footsteps' as he hailed his grandmother's sense of duty as 'quite remarkable'.

Harry, 31, was speaking as part of a new documentary which sees other members of the family give touching tributes to the monarch ahead of her 90th birthday next month.

Prince Harry has hailed his grandmother the Queen as 'quite remarkable' in a touching tribute ahead of the Monarch's 90th birthday next month, admitting that he often feels as though he is 'following in her footsteps'

Prince Harry chats to his grandmother the Queen on the balcony of Buckingham Palace during the annual Trooping the Colour Ceremony in June 2013 in London, marking the Queen's official birthday

The new documentary follows family and friends reflecting on the Queen's life ahead of her 90th birthday

In a new clip, which will appear in ITV's Our Queen At Ninety documentary this Sunday, the prince revealed: 'People always say: "Do you ever feel as though you're following in her footsteps?" And yes, that's exactly what we are doing. 

'There is nowhere on this planet I can think of that she hasn't been in the last 90 years.

'She's been everywhere, and sometimes that's quite hard because you go to a place where she hasn't visited for 20, maybe 15 years, and you think to yourself, how can I ever fulfill this huge expectation that comes with her and being a member of her family?'

And reflecting on his grandmother's famous 1947 speech, where she pledged her allegiance to the Commonwealth on her 21st birthday, Harry gushed: 'It's a hugely moving speech.

'It's just incredible to know that someone of that age appreciated and understood exactly what was expected of them, and to basically put duty ahead of everything else so early on in her life. It's quite remarkable.'

New footage show Her Majesty The Queen at work in Buckingham Palace reading daily correspondence from her 'red box' of official papers - containing everything from cabinet minutes to state papers

Another newly-released interview sees Sophie, Countess of Wessex commenting on her grandmother's sense of style. 

Speaking of the Queen, who often favours bright pastel colours and distinctive hats, the Countess said: 'When she turns up somewhere, the crowds are 15-deep and somebody wants to be able to say that they saw a bit of the Queen's hat when she went past.

'She needs to be able to stand out, for people to be able to say, "I saw the Queen".'

The two-hour documentary will also feature interviews with Prince Charles and the Duke and Duchess of Cambridge, who touchingly revealed that her son George calls the Queen 'Gan Gan'.

'She needs to be able to stand out': Sophie, Countess of Wessex revealed that the reason behind her grandmother's distinctive fashion sense is that she wants well-wishers to be able to spot her in the crowd

The two-hour documentary will also feature interviews with the Duke and Duchess of Cambridge, pictured, with the Duchess touchingly revealing that her son George, now two, calls the Queen 'Gan Gan'

Prince Charles, recalling a recent discussion, said: ‘I was saying to my mother the other day, “Do you realise that when you reach 90, I shall have known you for 68 years?” She had to laugh a little bit'

In a conversation at Clarence House, Charles, recalling a recent discussion, said: ‘I was saying to my mother the other day, “Do you realise that when you reach 90, I shall have known you for 68 years?” She had to laugh a little bit.'

New footage released today also follows Her Majesty on a Chinese State visit and arriving at Euston Station to take the £1.5million Queen's Messenger overnight train. 

She is also seen making preparations for a large State banquet for the recent Chinese State visit at Buckingham Palace's ballroom, with the narrator explaining that the Royal's attention to detail extends to the lighting and even the position of microphones hidden in the flowers. 

In another clip, the Queen is seen arriving at Euston Station at 11pm to board the private £1.5million Queen's Messenger overnight train.

Speaking of his grandmother, Harry said: 'It's just incredible to know that someone of that age appreciated and understood exactly what was expected of them, and to basically put duty ahead of everything else'

The Queen, pictured with grandson Prince Harry at the Chelsea Flower Show in 2013, is portrayed as a perfectionist who puts a huge amount of attention to detail into everything from banquets to school visits

Prince Harry (bottom right) with his brother William, late mother Diana and grandmother the Queen, watching the Massed Bands of the Royal Marines Beating the Retreat over the Horse Guards Parade in 1988

Edward Young, deputy private secretary, described the attention to detail that goes into every royal engagement. 'For the Queen there's no such thing as an average engagement; every visit is very carefully planned for,' he explained. 

'There's just as much preparation put into a visit to a school or a hospital as there is to an audience with the Prime Minister.

Footage shows the monarch attending to daily paperwork that is delivered to her via her famous red box, a briefcase filled with Cabinet minutes, documents to read and sign.

'The Queen of course is head of the armed forces, the head of the Commonwealth, governor of the Church of England and of course Queen of 16 realms, not just the United Kingdom,' Edward Young explains. 'And this requires a great deal of active management.'

Our Queen at Ninety, which celebrates the Queen ahead of her 90th birthday in April, will be broadcast on ITV on Easter Sunday, March 27, at 8pm.