Target Towns: Will Labour's U-turn on green spending cost the party in Grimsby

Sky's economics and data editor Ed Conway writes that the cost of fish can tell you much about the picture for prices in the economy. He says Grimsby's fish market can tell us about the costs of living in the UK. Ed Conway: 'Fish prices are a sign that the economy is in the right direction'

Sky's economics and data editor Ed Conway writes that the cost of fish can tell you much about the picture for prices in the economy. He says Grimsby's fish market can tell us about the costs of living in the UK. Ed Conway: 'Fish prices are a sign that the economy is in the right direction'

Labour will need an 11.7 point swing to win back Grimsby and Cleethorpes. The newly merged constituency has been merged with the Conservatives. Labour's U-turn on green spending will cost the party in the newly merged seat. The new constituency is one of the most hotly contested areas in the country.