Royal Mail is to cut its late collection times at post boxes by almost half.
Between 45,000-50,000 of its 115,3001 post boxes will be moved to an earlier collection time between 9am and 3pm.
The company said there will be a late posting box within half a mile and have pledged to add 2,000 more postboxes to its network.
Royal Mail said the changes will "improve the efficiency of its collection arrangements".
Shadow business secretary Chuka Umuna said the changes are "disappointing" for customers and businesses.