The Rug Company is mapped at number 124 and their web site https://uk.therugcompany.com/london-holland-park/ shows a photo of it occupying only the corner shop ie number 124. Mark Wilkinson was mapped as number 126 which would be the white building just to the left of that photo. Are you saying that the rug company now occupies both shops?

Also have a look at Urchin mapped at https://www.openstreetmap.org/way/790513439/ which claims to be number 126 but the web site says it is "on pause until Autumn 2026". Maybe it has expanded into what was Mark Williamson.