This 1851 entry corresponds with the 1841 household. Maybe father Matthew joined his children after 1851, can't see him in 1861 - spellings as transcribed:
Matthew Speedet 44, innkeeper b. Abernethy Perthshire
Mary Speedet 13, b. Newburgh
Alexander Speedet 11, b.Newburgh
Elizabeth George 32, servant
Address: Eastern Suburbs Comt Inn, Newburgh
Monica