Police were on hand as crowds gathered outside Nottingham Contemporary to welcome the newly-engaged couple.
Their visit to Nottingham comes four days after Harry and Markle announced their engagement.
As thousands of fans tuned in again this morning to see the couple arrive for their first day of duties in Nottingham, numerous world's designers will have also been on standby again, just in case the royal-to-be has been shopping, incognito, in one of their stores.
"We're so happy for them both", Mary Cooper, 60, said.
But it marks the first formal visit by the couple in what will be a six-month tour of the United Kingdom, allowing the American former actress to get to know her new home.
Afterwards, the couple were visiting Nottingham Academy to meet headteachers from local schools and hear about the Full Effect programme, an initiative supported by the charity of Harry, his elder brother Prince William and wife Kate, which seeks to deter children from becoming involved in violence. The day included a visit to Terrence Higgins Trust, an HIV charity.
At their first sit-down interview after they announced their engagement, the difference between them and Will and Kate during their first post-engagement interview was even more striking.
Harry and Markle greeted people lining the streets in Nottingham on Friday.
Their wedding is scheduled to take place next May at Windsor Castle. "She will also become the fourth patron of the Royal Foundation of the Dukeand Duchess of Cambridge and Prince Harry".