Shoppers who swap fatty foods for fruit, vegetables and healthy alternatives will save themselves the equivalent of a month’s grocery spend each year, according to new research.

The latest results from the British Food Index reveals that the average monthly food spend for those who eat a high fat diet is £219 whereas those who follow a healthy diet, buying ‘five a day’, fish and low fat options spend just £199 a month - a saving of £240 each year.

Overall, men spend slightly less on food than women: £203 versus £206 and the younger age group spends the least on the weekly food shop - just £160, compared to £233 for those aged 30 - 50 and £198 for the over 50s.