Last week it emerged inflation is rising at its fastest rate for nearly three years Experts warn that a spending boom could push it as high as 4% within months In April, 11 million households saw their bills increase by almost £100 a year Average petrol prices are now above 133p a litre, their highest level since 2013 Food and non-alcoholic drink prices rose by 2.5% in the 12 months to June 2021