By Lars Mucklejohn Shares in John Wood Group soared on Wednesday to their highest level in a year after the engineering services firm rejected a takeover offer from Dubai-based rival Sidara. The FTSE 250 company said in stock market filing that it received Sidara’s all-share proposal last Tuesday, valuing the Scottish firm at more than £1.4bn, or 205p per share. The proposal represented a more than 35.5 per cent premium to Wood’s stock price at the time of the offer. It said the board concluded that the offer “fundamentally undervalued Wood and its future prospects” and rejected it earlier tod…