LETTERS are being delivered more quickly again in Huddersfield after a slump earlier this year.
Figures for April to June show the amount of first class post arriving next day fell sharply to 87.2%.
But for July to September it has risen again to 91.1% - below the 92.3% national target.
Last year Royal Mail said Huddersfield people had the second-quickest service in the UK.
But the town is not listed in the latest top ten.
It is now fallen into the bottom half of 30 postcode areas in the north of England - in 16th place.
Royal Mail said today it was making £1m a day and delivering more than nine out of 10 first class letters on time.
Chief executive Adam Crozier said the group was being "transformed" under a massive modernisation programme which had delivered profits of £217m in the first half of the current financial year.
The company was now on course to make profits of £400m in the full year, which will trigger payments of at least £800 to every postal worker in the UK.
Nationally, the number of first class letters delivered a day after posting was 92.1% in three months to September - almost 4% up on the quarter to June and one of the best performances in 10 years, but below the 92.5% target.