London’s equities markets were mixed Thursday.

While the FTSE 100 added 0.91 percent to 6,363.9, the FTSE 250 was down 0.42 percent to 11,172.4.

The biggest gainers on the session on the 100 were in the mining and telecommunications sectors.

Among miners BHP Billiton (LSE: BLT; NYSE: BHP; ASX: BHP) was 2.61 percent higher to £14.94 and Anglo American (LSE: AAL) gained 3.27 percent to €29.08, while Lonmin (LSE: LMI) added 3.66 percent to £34.26.

The mining gains came on higher base metals prices.

In the telecommunications sector, BT Group (LSE: BT.A; NYSE: BT) was up 2.9 percent to 319p, while Cable and Wireless (LSE: CW) was the best performer on the 100 with a gain of 4.5 percent to 174.3p.

The biggest winner on the 250 was in the financial services sector, where Ashmore (LSE: ASHM) added 6.48 percent to 263p.

Elsewhere in the sector, Bluebay (LSE: BBAY) was 2.98 percent higher to 380p.

Also gaining on the 250 were construction engineers Keller Group (LSE: KLR), up 3.92 percent to £10.88.

In the oil sector oil, gas and coal services group Petrofac (LSE: PFC) added 3.47 percent to 462p.

The worst performance on the 100 came from the banking sector, where Northern Rock (LSE: NRK) dropped 4.91 percent to 639p.

Still among banks, Alliance & Leicester (LSE: AL) was down 2.7 percent to 937.5p.

Property developer British Land (LSE: BLND) fell 1.88 percent to £12, while in the pharmaceuticals sector Shire was 2.5 percent lower to £12.46.

Sports retailer JJB Sports (LSE: JJB) dropped 4.37 percent to 164p, while human resources group STHREE (LSE: STHR) fell 5.34 percent to 323.5p.

London’s markets were also higher on the session.

The FTSE 100 added 3.5 percent to 6,064.2, while the FTSE 250 was 2.14 percent higher to 10,686.2.

As on the continent, banks saw gains.

Standard Chartered (LSE: STAN; SEHK: 2888) was the best performer on the 100 as it added 8.03 percent to £15.60, while Northern Rock (LSE: NRK) was right behind with a gain of 7.66 percent to 709.5p.

Insurers were also higher, with Standard Life (LSE: SLET) up 7.01 percent to 305.5p.

Broker ICAP (LSE: IAP) was 6.48 percent higher to 484.5p.

Miners also saw gains.

Rio Tinto (LSE: RIO) gained 1.8 percent to £29.82, while BHP Billiton (LSE: BLT; NSYE; BHP; ASX: BHP) added 3.5 percent to £12.24 and Lonmin (LSE: LMI) was 6.52 percent higher to £29.74.

In the pharmaceuticals sector, AstraZeneca (LSE: AZN; NYSE: AZN) was up 2.55 percent to £23.36 while GlaxoSmithKline (LSE: GSK; NYSE: GSK) gained 3.33 percent to £12.71.

Oil and gas services group Petrofac (LSE: PFC) had the best day on the 250, where it added 7.72 percent to 418.5p, while the biggest loser there was asset manager Henderson Group (LSE: HGI; ASX: HGI) at a drop of 2.9 percent to 125.5p.

There were only two losers on the 100 on the session. Imperial Chemical Industries (LSE: ICI) dropped 0.16 percent to 616p, while retailer Tesco (LSE: TSCO) was down 0.12 percent to 403.5p.

The London equities markets were mixed on Monday on slow trade in the run-up to Christmas. The FTSE 100 dropped 0.2 percent to 6,257.4, while the FTSE 250 was up a bare 1.7 points to 11,087.7, with less than 2.5 billion shares trading hands.

In the leisure sector, cruise ship operator Carnival added 2.2 percent to £25.04 as oil prices declined. Also helping was a repeated “buy” rating from Deutsche Bank.

Retailer Next benefited from an increased target share price and positive comments from Merrill Lynch. The clothing retailer was 1.3 percent higher to £18.14.

Smith & Nephew added 8.1 percent to 521¾p for the biggest gain on the 100 on the session. Merrill Lynch upgraded the orthopedics company to “buy” and put its target share price at 580p on the theory that it is a target for takeover after it lost its bid to purchase US company Biomet.

Oilfield services company Petrofac saw the largest gain on the 250, gaining 4.8 percent to 395¾p, a new record, after it said its profits for the year will hit the top of the range of expectations.

Losers incuded Cairn Energy, which dropped another 2.8 percent to £18.61 after its Indian IPO was less than successful, with shares riding in the bottom end of the range.