Having a rare day just with my husband and we are looking for something do in London to pass the day before an evening event. We are staying near Holborn, so quite central. Weather looking mostly dry from 11ish onwards. Everything seems to be booking up quickly, so preferably something that doesn’t require booking beforehand. Any suggestions for somewhere to have a stroll around; market perhaps, or area with decent independent shops or interesting landmarks would be great. Many thanks!