A young, blonde woman in an eye-catching zip-fronted red dress caught the eye of Prince Philip on a royal walkabout, prompting yet another inappropriate outburst from the Royal.

The Queen's husband, who is 90 tomorrow, was in typically upfront form as he told a police officer 'I would get arrested if I unzipped that dress'.

His comments appeared to embarrass council worker Hannah Johnson, 25, and she didn't want to discuss the incident today when contacted at her offices at Bromley Council, South London.

Hannah Jackson, pictured in the red dress, moments after Prince Philip made his comments to a police officer

Prince Philip told a police officer that he would be arrested 'if i unzipped that dress' when he saw Miss Jackson

Before diverting calls, however, she said: 'We were talking about the event generally, it was quite a busy day and I was in the formal line-up.'

But when quizzed about the Duke's comment, the schools and transport co-ordinator said: 'I'm not sure really what to say,.'

One onlooker who saw the police officer struggling to contain his laughter said: 'It was one of Prince Philip's classics.