** Shares of British information group RELX REL.L rise 4.2% to 2,097 pence; second biggest pct gainer on FTSE 100 index .FTSE
** Posts 9% rise in 2025 operating profit at 3.34 billion pounds ($4.55 billion), revenue up 7% at 9.59 billion pounds
** REL says AI will drive growth for "many years"
** Says it was developing and launching products with embedded AI at a faster pace, while continuing to grow its top line ahead of its costs
** Stock fell 16.8% in 2025, while FTSE 100 gained 21.5%
($1 = 0.7334 pounds)
(Reporting by DhanushVignesh Babu in Bengaluru)
((DhanushVignesh.Babu@thomsonreuters.com))