On Saturday, 14 August 1915, the 08:45 Birmingham to Euston express passenger train hauled by LNWR George the Fifth Class locomotive No. 1489 lost a taper pin; its purpose was to lock a screwed collar which retained the offside coupling rod to its crank pin. The coupling rod detached and struck one of the sleepers on the up line; pushing the track out of alignment just as the 08:30 Euston to Holyhead Irish Mail train approached. It consisted of 15 coaches hauled by two locomotives LNWR Renown Class No. 1971 and Precedent Class No. 1189 and was travelling at 60 miles per hour. Both locomotives and every carriage was derailed; several being thrown down an embankment, killing 10 passengers and injuring 21 more.