<Tr> <Td> </Td> <Td> Semi and unskilled manual workers </Td> </Tr> <Tr> <Td> </Td> <Td> Casual or lowest grade workers, pensioners and others who depend on the state for their income </Td> </Tr> <P> The UK Office for National Statistics (ONS) produced a new socio - economic classification in 2001 . The reason was to provide a more comprehensive and detailed classification to take newer employment patterns into account . </P> <Table> <Tr> <Th> Group </Th> <Th> Description </Th> <Th> NRS equivalent </Th> </Tr> <Tr> <Td> </Td> <Td> Higher professional and managerial workers </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> Lower managerial and professional workers </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td> Intermediate occupations </Td> <Td> C1 and C2 </Td> </Tr> <Tr> <Td> </Td> <Td> Small Employers and non professional self - employed </Td> <Td> C1 and C2 </Td> </Tr> <Tr> <Td> 5 </Td> <Td> Lower Supervisory and technical </Td> <Td> C1 and C2 </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Semi-Routine Occupations </Td> <Td> </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Routine Occupations </Td> <Td> </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Long - term unemployed </Td> <Td> </Td> </Tr> </Table>

Which of the following contributed to a shift in british class structure during the early 1900s