In London the FTSE 100 added 0.09 percent to 6,730.7, but the FTSE 250 dropped 0.4 percent to 11,576.3.

Northern Rock moved back into the gainers column with the best day on the 100, adding 5.91 percent to 273.25p on the possibility that Virgin Group is looking at a rescue of the troubled bank.

The oil sector was mixed on the session.

Dana Petroleum (LSE: DNX) was 3.66 percent higher to £13.04 and BP (LSE: BP; NYSE: BP; TYO: 5051) was up 4.3 percent to 619p, but Hunting (LSE: HTG) dropped 3.58 percent to 755p.

Online price comparison site Moneysupermarket.com (LSE: MONY) led the 250 with a gain of 4.8 percent to 191p.

The biggest loser on the 250 was holding company Rank Group (LSE: RNK), which fell 21.38 percent to 125p on the session.

House builders were still feeling the pain of Thursday’s new data showing that home prices fell again in September.

Persimmon (LSE: PSN) was 2.69 percent lower to 976p, while Barratt Developments (LSE: BDEV) was down 3.19 percent to 699p and Taylor Wimpey (LSE: TW) dropped 3.27 percent to 281.25p.

In London on Thursday, the FTSE 100 was 1.38 percent higher to 6,724.5 while the FTSE 250 gained 0.96 percent to 11,622.9.

Commodities-related shares were higher on the session.

Vedanta Resources (LSE: VED) had the best day on the 100 as it added 5.8 percent to £23.17, while oil refiner and distributor Hunting (LSE: HTG) was the best performer on the 250 with a gain of 10.28 percent to 783p.

Elsewhere among miners, gold miner Randgold (LSE: RSS; NAS: GOLD) was 7.43 percent higher to £17.35 and Aquarius Platinum (LSE: AQP; ASX: AQP; JSE: AQP) jumped 9.42 percent to £18.47.

Back in the oil sector, Tullow Oil (LSE: TLW; OTC: TUWLY) was up 4.68 percent to 626.5p, while BG Group (LSE: BG; NYSE: BG) added 4.74 percent to 883p.

Among banks, Northern Rock (LSE: NRK) slipped again, dropping 5.67 percent to 258p for the worst performance of the session on the 100.

Meanwhile, the house building sector and property developers had a bad day after the Royal Institution of Chartered Surveyors reported that house prices were lower in the UK again in September.

Bovis Homes (LSE: BVS) was down 2.56 percent to 684p and Bellway (LSE: BWY) dropped 2.89 percent to £10.76.

Barratt Developments (LSE: BDEV) was 3.54 percent lower to 722p, Persimmon (LSE: PSN) fell 4.02 percent to £10.03 and Redrow (LSE: RDW) was down 4.31 percent to 388.5p.

Taylor Wimpey (LSE: TW) fell 4.28 percent to 290.75p.

The London markets were higher Thursday.

The FTSE 100 added 1.3 percent to 6,212 and the FTSE 250 was 1.91 percent higher to 11,099.5.

Property developers and investors were mixed on the session. While Liberty International (LSE: LII) was 3.78 percent higher to £11.80, Barratt Developments (LSE: BDEV) was 0.22 percent lower to 903p.

Retailers saw declines.

Kingfisher (LSE: KFG) fell 0.24 percent to 207p and DSG International (LSE: DSGI) was the worst performer on the 100 with a decline of 1.59 percent to 154.8p.

In the oil sector, BG Group (LSE: BG; NYSE: BG) had the best day on the 100, gaining 4.27 percent to 782p as oil prices rose.

Still, oil refiner Hunting (LSE: HTG) was the worst perfomer on the 250, dropping 7.28 percent to 700p.

Other gainers on the day included pubs operator Enterprise Inns (LSE: ETI), which added 3.17 percent to 634.5p.

Brewer SAB Miller (LSE: SAB) was 3.51 percent to £13.26.

London’s markets joined the global market slide on Friday as the FTSE 100 fell 3.71 percent to 6,038.3 and the FTSE 250 was down 2.88 percent to 10,889.5.

Again, financial services groups ended up lower on the day. Northern Rock (LSE: NRK) led the decliners on the 100 as it dropped 9.57 percent to 713.5p, while investment managers Rathbone Brothers (LSE: RAT) was the worst performer on the 250 with a decline of 12.02 percent to £11.57.

Insurer Resolution (LSE: RSL) fell 6.71 percent to 626p, while special risks insurer Beazley Group (LSE: BEZ) was 7.98 percent lower to 150p.

Hedge fund Man Group (LSE: EMG) was down 0.06 percent to 479.25p, while asset managers Henderson Group (LSE: HGI; ASX: HGI) dropped 9.43 percent to 139.25p.

Among gainers, Avis Europe (LSE: AVE) led the 250 with a gain of 15.91 percent to 51p, while cruise operator Carnival (LSE: CCL; NYSE: CCL; NYSEL CUK) was the best performer on the 100 as it added 0.54 percent to £22.44.

Food processors did well on the 100.

Tate & Lyle was up 0.18 percent to 549p, while Associated British Foods (LSE: ABF) gained 0.3 percent to 844p.

The oil sector did well on the 250.

Oil refiner and distributor Hunting (LSE: HTG) was 3.36 percent higher to 707.5p, while JKX Oil & Gas (LSE: JKX) was up 13.48 percent to 360p.

London equities markets were up on Thursday, with the FTSE 100 added 1.25 percent to 6,697.7 and the FTSE 250 gained 1.22 percent to 11,809.

Most miners were higher on the session, but the sector managed to provide both the biggest winner and the worst performer on the 100.

Vedanta Resources (LSE: VED) added 6.45 percent to £18.00, while Rio Tinto (LSE: RIO) was 4.58 percent lower to £38.10.

Rio Tinto’s decline came after it put in a bid for Canadian aluminium producer Alcan (TSX: AL; NYSE: AL) and after Standard & Poor‘s announced that it would take a look at Rio Tinto‘s credit rating if the deal was completed.

Elsewhere in the sector, Xstrata (LSE: XTA) was 4.67 percent higher to £34.27 and Antofagasta (LSE: ANTO) added 6.39 percent to 715.5p.

The best performance on the 250 came from oil refiner Hunting (LSE: HTG), which gained 8.01 percent to 842.5p.

Other gainers on the 100 included British Airways (LSE: BAY; NYSE: BAB), which was 5.26 percent higher to 440.5p.

Hedge fund Man Group (LSE: EMG) added 4.05 percent to 616.5. Public transport company Arriva (LSE: ARI) was the worst performer on the 250 as it dropped 4.09 percent to 751p.

Other decliners on the 100 included Whitbread (LSE: WTB); the leisure services group fell 2.47 percent to £18.98.

Property developer Hammerson (LSE: HMSO) was 0.88 percent lower to £13.55.

The FTSE 100 closed down by 0.4 percent to 5,906.1 in London on Thursday, but the FTSE 250 added 0.2 percent to 9,601.2.

The oil sector saw gains on the day despite crude oil prices that were lower again after initial gains on the session. Premier Oil added 1.8 percent to £10.30 on talk that it could receive a bid from Pemex of Mexico. Cairn Energy was 3.1 percent higher to £21.32 ahead of the release of its half-year results next week. Tullow Oil gained 3.7 percent to 392¼p on reconfirmation of Deutsche Bank’s “buy” recommendation. In addition, oil services group Hunting was up 9.3 percent to 448p.

Among miners, Antofagasta managed a gain of 4 percent to 465½p on a gain in the price of copper.

Cruise ship operator Carnival added 2.9 percent on the session to £22.53 after a reiteration of Morgan Stanley’s “overweight” rating and on the news that Royal Caribbean’s earnings were up in its third quarter. This is somewhat of a comeback for Carnival, which was down 30 percent on the year so far.

Also staging a comeback was EMI, which has been in the doldrums since talks with Warner Music toward a merger were derailed in July. EMI added 2.4 percent to 267¾p on an upgrade to “outperform” from Cazenove, which cited the value of EMI’s back catalogue in light of the auction of BMG’s music publishing unit.