The FTSE 100 <.FTSE> index was seen opening up as much as 33 points, or 0.6 percent, on Wednesday, according to financial bookmakers, tracking gains on Wall Street and in Asia as investors await a summit on Friday aimed at finding a solution to the euro zone debt crisis.

There is mounting optimism euro zone leaders will agree a decisive plan to resolve the region's debt crisis, with hopes of fresh new measures such as further fiscal integration within the currency bloc as well as a bigger role for the European Central Bank to stem the region's debt crisis.

French President Nicolas Sarkozy and German Chancellor Angela Merkel will propose to Friday's EU summit a plan to impose mandatory penalties on euro zone states that exceed deficit targets, aiming to restore market confidence and prevent the region's debt crisis from spiralling out of control.

Details of their treaty reform proposals were due to be presented on Wednesday in a letter to European Council President Herman Van Rompuy, who will chair the meeting of 27 EU leaders.

The blue-chip index closed up 0.76 point, or 0.01 percent, at 5,568.72 on Tuesday following a see-saw session, as strength in defensive stocks countered by losses in risk-sensitive banks after credit ratings agency Standard & Poors warned of a possible downgrade to most euro zone countries.

U.S. blue chips <.DJI> closed 0.4 percent higher on Tuesday, with the MSCI's broadest index of Asia Pacific shares outside Japan <.MIAPJ0000PUS> up 1 percent on Wednesday, while the Nikkei stock average <.N225> added 1.7 percent.

On the data front, October industrial and manufacturing output numbers will be released at 9:30 a.m., with monthly falls of 0.3 percent and 0.2 percent forecast, respectively.

Across the Atlantic, the latest weekly mortgage and refinancing indexes will be released at 12 p.m., with U.S. consumer credit numbers for October due at 8 p.m.

Ex-dividend factors will clip 0.43 point off the FTSE 100 index, with AB Foods and Investec both set to trade without their dividend attractions.

Investec could also be weighed by expectations the stock will be one of three to be demoted from the FTSE 100 when the latest quarterly reshuffle of the index is announced after the London market close on Wednesday.

Inmarsat and Lonmin are also expected to be demoted to the FTSE 250 <.FTMC> index, with Irish building materials firm CRH and recently-listed Russian miners Evraz and Polymetal International
seen entering the index.

Stocks to watch on Wednesday are:

KESA ELECTRICALS

The electricals retailer delivers first-half results.

STAGECOACH GROUP

The transport operator posts first-half results.

DS SMITH

The paper & packaging firm unveils first-half results.

MICRO FOCUS INTERNATIONAL

The technology group unveils first-half results.

NUMIS CORP

The stockbroker reveals full-year results.

BREWIN DOLPHIN

The stockbroker posts full-year results.

CARILLION

The construction firm issues a trading update.

A G BARR

The soft drinks firm issues a trading update.

ATH RESOURCES

The coal miner reports full-year results.

ANTISOMA

The biotech firm holds its annual general meeting.

(Reporting by Jon Hopkins)