Corrects analyst quote in paragraph 3 to say 'in merchanting', not emergency
Oct 16 (Reuters) - ** Shares of British building materials supplier Travis Perkins TPK.L fall 2% to 629 pence
** Co faces consistent margin pressure and does not provide full-year profit guidance, despite 1.8% rise in third-quarter like-for-like sales
** "A lack of guidance or comment on the full year profit outlook combined with the message around margins and pricing in merchanting suggests that consensus could edge lower a bit," says Aynsley Lammin from Investec Bank
** Including session's losses, stock down 13.2% YTD
(Reporting by DhanushVignesh Babu in Bengaluru)
((DhanushVignesh.Babu@thomsonreuters.com))