London mid-morning: Arriva fever

On a quiet day for big company results London has crawled higher, with the strength of miners cancelling out the subdued performance of ex-dividend stocks such as HSBC, Standard Life and Thomas Cook.

The main point of interest in early trading is confirmation from bus and rail group Arriva that it has had an unsolicited bid approach. The shares have motored forward to a 52-week high, and have picked up sector peers FirstGroup, Stagecoach and National Express along the way.

After being under the cosh yesterday following disappointing results security services group G4S is receiving another battering today as rumours circulate that a massive placing of the company's shares is underway in the City.

Hedge fund manager Man Group is another poor performer after its flagship AHL fund lost value last week. Broker Morgan Stanley has cut its price target for the stock from 340p to 260p/

In contrast, broker comment has given a fillip to B&Q owner Kingfisher HSBC has upped its rating from 'neutral' to 'overweight' and reckons the company's 'underused balance sheet offers potential for international expansion and/or sector consolidation.'

Brokers were queuing up yesterday to suggest that full-year results from generic drugs maker Hikma Pharmaceuticals would be ahead of market consensus, which may explain the negative response to the 33% increase in 2009 operating profit it announced this morning.

Military decoy specialist Chemring radioed in a 5% increase in trade during the four months to the end of February at constant currency despite taking a hit from snow storms in both the UK and US.

Black cab maker Manganese Bronze is to cease production of bodies and chassis at its Coventry plant with the loss of 60 jobs after more heavy losses in 2009 and further losses forecast this year. The group is also considering a further fund raising to fund vehicle assembly less than a year after it raised £9.4m.

Mainland European newspaper publisher Mecom continued to feel the pinch of the global economic crisis last year as advertising revenues slumped.

Vehicle hire group Northgate reported an improvement in utilisation rates of its fleets in the four months to 28 February in the UK and Spain. In the UK, it achieved an average utilisation rate of 91% during the period, a 5% improvement on the rate achieved for the same period the previous year.

Gaming software specialist Playtech's underlying profits rose by a quarter last year as it got a boost from its joint venture with bookmaker William Hill.

Australia's Seeing Machines has won its biggest deal with the mining industry so far after selling its Driver State Sensor (DSS) computer vision product suite to BHP Billiton. The mining giant's Navajo Coal Company and San Juan Coal Company units will fit their entire haul truck fleet and a number of ancillary vehicles with the group's technology.

Derwent London, which rents out offices in the capital, remained stuck in the red during 2009, but a "substantial recovery" in central London property values during the second half of the year has continued into 2010.

Shares in Baltic Oil Terminals gushed ahead after the company, which operates terminals at the Russian port of Baltysk in the Kaliningrad territory, said it had settled a dispute with former director Vladimir Gavrilov, reducing the company's liabilities by $1.4m.