** Oil major BP up 2 pct, top of the FTSE 100, after reporting Q3 profit ahead of analysts' estimates
** Co reports Q3 underlying replacement cost profit of $1.8bln, compared with analysts' consensus of $1.2 bln
** Co also announces further spending cuts and asset salesto tackle an extended period of low oil prices
** Stock one of only two gainers on Stoxx 600 Oil and GasIndex, which is down 0.6 pct (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)