nottingham england britain prince harry american fiancee meghan markle delight cheer crowd brave cold friday watch couple first official engagement together queen elizabeth grandson harry 33 fifth-in-line throne u.s. actress markle 36 previously best know lead role u.s. legal drama suit announce engagement monday ignite transatlantic media frenzy central english city nottingham pair wear long navy overcoats greet hundreds smile well-wishers wave british u.s. flag love harry meghan look beautiful betty parker 78 tell reuters wait meet couple happy mary cooper 60 say always come see whenever come lovely keep come nottingham sort adopt city couple visit charity fair mark world aid day event particularly symbolic harry whose late mother princess diana credit play important role break stigma attach disease event hold terrence higgins trust remember live lose hiv mark progress make fight harry become prominent campaigner issue follow footsteps diana open britain first hiv/aids unit london 1987 confront stigma kiss aid patient hospital visit wonderful together clearly see immense amount love adoration personal point view course also work involve say hiv campaigner chris hanlon meet couple event afterwards couple go nottingham academy meet headteachers local school hear full effect programme initiative support charity harry elder brother prince william william wife kate seek deter children become involve violence markle campaigner several cause include work u.n women advocate give previous charity roles begin life britain royal family harry spokesman say tuesday also keen travel around britain get know country become home intend become british citizen spokesman add couple become engage early month cottage share ground kensington palace central london marry next may st george chapel windsor castle family home british kings queen almost 1,000 years good excite americans royal family u.s. student mark arnold study nottingham university tell reuters really nice excite uk 's prince harry fiancee markle delight crowd first official walkabout