London midday: Stocks stay above 6,000

Stocks have crept further beyond the 6,000 point mark as the post-Greek pro-austerity measures vote rally continues.In company news, most interest is to be found in the mid-cap index. N Brown, the FTSE-250 online and catalogue retail firm is wanted after total group revenue increased 5.1% in the 18 weeks to 2 July this year. On a like-for-like basis (adjusting for its new lingerie outfit Figleaves) revenue growth was 1.6%. Trading is in line with expectations at the waste management group Shanks, but the chief executive Tom Drury is leaving to spend more time with his family and the shares are down.Tullow Oil enjoyed record revenues in the first half of the year while achieving a 79% exploration and appraisal success rate. Total revenue for the first half of 2011 is expected to be a record for the company at around $1.05bn, compared with $486m for the same period in 2010. House builder Persimmon said market conditions in the first half of the year have been stable. The group completed 4,439 homes, down from 4,657 in the first half of last year, with saless improving from the lower sales order book at the start of the year.Among smaller companies, Croma is looking less like a penny stock after the security services provider said its subsidiary Photobase has won a £450,000 contract, its biggest to date, to develop security software for electronic security group CSS.Northern Bear burned bright after the building services group said its renewable energy subsidiary had won a contract to install solar panels. Bed and sofa maker Airsprung is sharply lower after saying it expects to see a continuing decline in profitability this year as demand for its beds deteriorates.FTSE 100 - RisersTullow Oil (TLW) 1,285.00p +2.55%Reckitt Benckiser Group (RB.) 3,570.00p +2.35%Royal Bank of Scotland Group (RBS) 39.81p +1.79%Capita Group (CPI) 721.00p +1.69%Marks & Spencer Group (MKS) 372.90p +1.66%IMI (IMI) 1,094.00p +1.48%Resolution Ltd. (RSL) 296.50p +1.33%Land Securities Group (LAND) 892.00p +1.31%BT Group (BT.A) 203.10p +1.30%Investec (INVP) 519.00p +1.27%FTSE 100 - FallersIntertek Group (ITRK) 1,897.00p -3.36%Associated British Foods (ABF) 1,071.00p -1.38%Kazakhmys (KAZ) 1,379.00p -1.15%Rio Tinto (RIO) 4,486.00p -1.11%Petrofac Ltd. (PFC) 1,532.00p -1.10%International Power (IPR) 318.60p -0.69%Smith & Nephew (SN.) 667.50p -0.67%Cairn Energy (CNE) 402.30p -0.59%BHP Billiton (BLT) 2,459.00p -0.57%BAE Systems (BA.) 317.30p -0.53%FTSE 250 - RisersYule Catto & Co (YULC) 245.20p +6.61%Brewin Dolphin Holdings (BRW) 157.30p +3.49%Kofax (KFX) 479.90p +3.43%EnQuest (ENQ) 131.00p +3.39%Telecom Plus (TEP) 677.50p +2.96%Dixons Retail (DXNS) 16.24p +2.78%Lancashire Holdings (LRE) 670.00p +2.76%St James's Place (STJ) 371.80p +2.71%Croda International (CRDA) 2,037.00p +2.62%Redrow (RDW) 128.40p +2.39%FTSE 250 - FallersBetfair Group (BET) 717.50p -3.69%Aquarius Platinum Ltd. (AQP) 308.00p -2.84%International Personal Finance (IPF) 370.60p -2.78%Enterprise Inns (ETI) 66.15p -1.93%Talvivaara Mining Company (TALV) 447.20p -1.84%Gem Diamonds Ltd. (DI) (GEMD) 225.00p -1.75%Thomas Cook Group (TCG) 132.20p -1.71%Petropavlovsk (POG) 736.50p -1.60%Britvic (BVIC) 394.70p -1.20%Salamander Energy (SMDR) 280.70p -1.06%