A new £68 "shopper fare" on the Dublin to London Heathrow route was introduced yesterday by British Midland. The airline said the fare was the lowest on the route. It has also re-introduced its £69 "midweek winter saver fare" on the same route. With a passenger growth rate of 8 per cent last year, British Midland said Dublin to Heathrow was outperforming all other routes on its international network.