COURIER company DHL’s senior manager “should be ashamed” of himself for mistreating staff who have delivered huge profits for the company, GMB said yesterday.

The firm’s 2017 annual report showed its earnings before interest and taxes were up 7.2 per cent to over €3.7 billion (£3.3bn) while chairman Frank Appel’s basic annual salary went up to just shy of £2 million.

Mr Appel also stands to trouser more than £5m over the next four years in “performance-related remuneration.”