I know that this was 4 years ago, but this might be of interest:
The Air League Annual Reception was held in the very prestigious surroundings of St James’s Palace on Thursday, 31st May hosted by His Royal Highness Prince Philip The Duke of Edinburgh, who is Patron of The Air League. Marshall of Cambridge is a very strong supporter of The Air League
and a number of employees attended the Reception. Robert Marshall, Chief Executive Officer of Marshall of Cambridge (Holdings) Ltd and his partner Tracey Curtis-Taylor, together with Steve and Beverley Fitz-Gerald, were presented to Prince Philip at the beginning of the evening on the arrival of Prince Philip in the Throne Room at St James’s Palace.