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.

In London on Monday, the FTSE 100 was 0.57 percent lower to 6,189.1 and the FTSE 250 fell 1.67 percent to 10,998.8.

Standard Life (LSE: SLET) was the biggest gainer on the 100, adding 3.03 percent to 315p on consolidation hopes within the sector.

Builder Alfred McAlpine (LSE: MCA) did the best on the 250 with a gain of 4.7 percent to 484.5p.

Other gainers on the session included the house building sector, where Persimmon (LSE: PSN) was up 1.93 percent to £11.64 and Taylor Wimpey (LSE: TW) added 2.18 percent to 339.75p.

British American Tobacco (LSE: BATS; AMEX: BTI; KLSE: BAT) was 2.4 percent higher to £16.12, while music retailer HMV Group (LSE: HMV) gained 4.7 percent to 118.25p.

The biggest loser on the day on the 100 was platinum miner Lonmin (LSE: LMI), which fell 4.81 percent to £30.85.

Aquarius Platinum (LSE: LSE: AQP; ASX:AQP; JSE:AQP) did even worse on the 250, dropping 5.56 percent to £12.90.

Elsewhere in the mining sector BHP Billiton (LSE: BLT; NYSE: BHP; ASX: BHP) dropped 2.98 percent to £13.33, while Kazakhmys (LSE: KAZ) fell 2.93 percent to £11.94, Anglo American (LSE: AAL) was 2.68 percent lower to £26.85 and Rio Tinto (LSE: RIO) was down 1.33 percent to £32.19.

Investment trust Ashmore (LSE: ASHM) did the worst on the 250, falling 8 percent to 204p.

Other decliners on the session included supermarket chain Wm Morrison (LSE: MRW), which dropped 3.6 percent to 274.25p.

Pubs operator Punch Taverns (LSE: PUB) fell 3.36 percent to £10.36 and investment management group INVESCO (LSE: AVZ; NYSE: IVZ) was 3.15 percent lower to 585p on its exposure to the US housing sector.

In London on Tuesday the FTSE 100 fell 0.58 percent to 6,659.1, while the FTSE 250 was 0.98 percent lower to 11,801.

Food processor Tate & Lyle (LSE: TATE) had the best day on the FTSE 100, adding 4.81 percent to 599.5p on an upgrade from “neutral” to “buy” from Goldman Sachs (NYSE: GS).

Meanwhile Inmarsat, the telecommunications satellite operator, gained 5.08 percent to 434p on the FTSE 250 for the best performance there.

The biggest loser on the day on the 100 was Lonmin (LSE: LMI), which dropped 3.89 percent to £38.30 on the 100 after both Goldman Sachs (NYSE: GS) and Deutsche Bank (FWB: DBK; NYSE: DB) lowered the miner‘s target share price.

On the 250, investment trust Ashmore dropped 3.51 percent to 268.25p for the worst day on the 250.

Banks saw gains.

Barclays Bank (LSE: BARC; NYSE: BCS; :TYO: 8642) was 0.48 percent higher to 732p, while Lloyds TSB (LSE: LLOY) gained 0.53 percent to 572p.

Gyrus Group (LSE: GYG), which makes and sells surgical supplies, added 2.73 percent to 469.75p.

Investment managers Schroders (LSE: SDR) fell 3.61 percent to £12.80, while its non-voting shares dropped 3.22 percent to £11.41.

Rolls-Royce (LSE: RR) was 2.83 percent lower to 548.5p after Credit Suisse (NYSE: CS; SWX: CSGN) dropped its recommendation on the airplane engine maker from “outperform” to “neutral”.

Meanwhile, Reed Elsevier (LSE: REL; Euronext: REN; NYSE: ENL; NYSE: RUK) fell 2.81 percent to 656p on the news that it is selling its Harcourt educational division to Houghton Mifflin.