<Tr> <Th> Entered (week ending) </Th> <Th> Weeks in top 10 </Th> <Th> Single </Th> <Th> Artist </Th> <Th> Peak </Th> <Th> Peak reached (week ending) </Th> <Th> Weeks at peak </Th> </Tr> <Tr> <Th_colspan="7"> Singles in 2017 </Th> </Tr> <Tr> <Td> 21 September 2017 </Td> <Td> 15 </Td> <Td> "Havana" ‡ </Td> <Td> Camila Cabello featuring Young Thug </Td> <Td> </Td> <Td> 9 November 2017 </Td> <Td> 5 </Td> </Tr> <Tr> <Td> 2 November 2017 </Td> <Td> 14 </Td> <Td> "Perfect" ‡ </Td> <Td> Ed Sheeran </Td> <Td> </Td> <Td> 14 December 2017 </Td> <Td> 6 </Td> </Tr>

Who secured the first number one in 2018