Esso said it, too, was increasing the price of unleaded by between 1p and 2p per litre - but only at filling stations that had been charging 'lower' rates of between 69p and 70p. Although the company was not imposing a nationwide price increase, the move takes the typical forecourt cost of Esso petrol to between 70.9p and 71.9p per litre, the Esso spokesman said. 'We will continue our daily PriceWatch monitoring to ensure that we remain true to our pledge of competitive local prices,' he added.