UNDER-fire energy giant ScottishPower and the Scottish Government have agreed to work together on a GBP10 million campaign to improve household energy efficiency after finance secretary John Swinney yesterday presided over a high-level meeting to discuss the firm's recent inflation-busting price hikes.  ScottishPower's UK retail director, Raymond Jack, and chief executive for generation, John Campbell, were summoned to talks after the firm earlier this month raised the average yearly household bill for both electricity and gas to just under GBP1,400.  The campaign will see some households benefit from upgraded insulation and heat