The Queen is elegant in a plum ensemble as she leaves MI5’s HQ

The Queen thanked MI5 staff for ‘keeping our country safe’ during her first public visit to the intelligence agency’s HQ.

Speaking at the headquarters at Thames House, London, the Queen, 93, said she is ‘always struck’ by their ‘remarkable resolve’ to carry out work ‘without public recognition’. 

Sir Andrew Parker, MI5’s director general and head, gave the Queen a tour of the agency’s private museum and showed her artefacts relating to double agents who helped deceive the Nazis over the site of the Second World War D-Day landings.

The visit to the London headquarters was not announced ahead of time. 

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 The Queen thanked MI5 staff for ‘keeping our country safe’ during a visit to the headquarters in London today. Pictured, leaving Thames House with Director General Andrew Parker

The Queen, 93, delivered a speech, saying how she is 'always struck' by the 'remarkable resolve' of MI5 employees. Pictured, with Director General Andrew Parker after the visit

The Queen, 93, delivered a speech, saying how she is ‘always struck’ by the ‘remarkable resolve’ of MI5 employees. Pictured, with Director General Andrew Parker after the visit

The monarch donned an elegant plum ensemble for the low-key outing to Thames House. She delivered a speech to staff before being escorted out by the Director General, pictured

 The monarch donned an elegant plum ensemble for the low-key outing to Thames House. She delivered a speech to staff before being escorted out by the Director General, pictured

The Queen appeared in excellent spirits as she met MI5 employees at the headquarters

The Queen appeared in excellent spirits as she met MI5 employees at the headquarters

The Queen  looks at artifacts relating to MI5 D-Day operations with Sir Andrew Parker

The Queen  looks at artifacts relating to MI5 D-Day operations with Sir Andrew Parker

The Queen thanked intelligence workers in a speech, pictured, saying she was struck by their 'remarkable resolve'

The Queen thanked intelligence workers in a speech, pictured, saying she was struck by their ‘remarkable resolve’ 

Typically co-ordinated, the Queen plumped for a plum-coloured ensemble for the outing, wearing a vibrant coat over a floral dress and accessorising with a hat in the same shade. 

She finished the outfit with her trusty handbag and black leather shoes, adding a pair of gloves to protect her hands from the cold. 

The Queen said in her speech: ‘I would like to take my visit here today as an opportunity to thank you all for the tireless work you do to keep our country safe.

‘I am always struck by the remarkable resolve with which you carry out your vital role. There will no doubt continue to be significant threats and challenges ahead. 

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