** British luxury brand Mulberry MUL.L jumps 15.6% to 130p
** Co says it is working with advisers to evaluate sporting
goods retailer Frasers' FRAS.L sweetened 111 mln pound ($145
mln) takeover proposal
** MUL's top investor Challice refuses to sell to FRAS,
which is down marginally after announcement
** Frasers has until Oct. 28 to make a firm offer or walk
away
** MUL down ~17% YTD, while FRAS down ~11%
($1 = 0.7655 pounds)
(Reporting by Yamini Kalia in Bengaluru)
((Yamini.Kalia@thomsonreuters.com;))