The cost of an average Christmas dinner for four is up 6.5% on last year to £32.57 as the price of turkey and vegetables rise, latest supermarket figures show.The increase is significantly higher than overall grocery inflation of 2.6%, which is up again on November's 2.3%, according to analysts Kantar.Despite the rising prices, sales across the supermarkets are expected to exceed £13 billion over the four weeks of December for the first time ever.

The cost of an average Christmas dinner for four is up 6.5% on last year to £32.57 as the price of turkey and vegetables rise, latest supermarket figures show.The increase is significantly higher than overall grocery inflation of 2.6%, which is up again on November's 2.3%, according to analysts Kantar.Despite the rising prices, sales across the supermarkets are expected to exceed £13 billion over the four weeks of December for the first time ever.