The FSTE 100 Index is up for a third day, lifted by Shell Transport & Trading on announcing that it will combine with Royal Dutch Petroleum, to simplify ownership of Europe's second-largest oil company.
The UK benchmark is currently up about 29.50 points to 4659.60 points.
Shell, which owns 40% of Royal Dutch/Shell Group, added 18.50p, to 442.25p.
The company also today, reported third-quarter net income rose 70% to $4.41bn, based on accounting that strips out costs from holding oil inventories.
British Airways gained 5.50p to 212p, with a drop in oil narrowing its costs.
Abbey National is also up 10.50p to 627.50p.
Boots Group is down 5.50p to 665.50p, while BP has lost 3.50p to 532p this morning.
In Asia, stocks are on the up, as a result in the slump of oil prices.
In Japan at close earlier this morning, the Nikkei 225 Index saw a 1.51% gain to 10853.12 points, with Honda and Fanuc contributing to the benchmarks gain.
Honda picked up 4.6% to 5,270 yen, its biggest advance since May 12, after raising its full-year net income forecast by 7% to 447bn yen as new models boost demand.
Fanuc, the world's biggest maker of industrial robots, is up 5.2% to 6,450 yen, the largest gain in almost 14 months.
The company increased its full-year profit estimate by 27% to 76bn yen after further orders from electronics companies and automakers generated a 44% gain in first- half net income.
Canon rose 2.2% to 5,170 yen. The company reports its earnings today.
In the US, the Dow Jones continues a good week, raising 113.55 points in value to 10002.03 points.
Coca-Cola is up $1.13 to $40.43, along with Home Depot up $1.12 to $40.79.
Proctor and Gamble lost $1.43 to $51.78IFAonline
Two global vehicles
'Further plug advice gap'
Must appoint separate CEOs and boards
Advisers do come out well
Will report to Mark Till