S&P continues to rate the utility a “strong buy” with a 12-month target price of 385p. The broker believes the shares are good value, despite ongoing competition in the UK energy supply market, and that the firm’s trading update on 17 November will show a continued strong performance, particularly in the US.

UBS rates the power supplier “buy” with a raised 12-month target price of £18.50. Revenue growth has accelerated significantly, the broker believes, with growth of 17 per cent during the third quarter even when Aggreko’s World Cup contracts are excluded. UBS sees the firm starting 2011 with strong momentum for further gains.

Singer Capital Markets rates the technology company a “buy” with a target price of 305p. It sees the firm’s rail operations declining slightly, and predicts revenue of £1.14bn, below consensus estimates, when Invesys reports its interim results on Thursday. However, Singer notes that the UK’s Crossrail project lends future stability.