According to a May 2018 report, in the BMJ:  ‘The number of people waiting more than 18 weeks for NHS [England] treatment has increased by 35% in the past year, official figures show.’  In a comparable period, NHS Scotland reported:  ‘In March 2018, for all Boards, 81.2% of patients were reported as being seen within 18 weeks. The figures for January and February were 81.0% and 81.0%respectively.’
https://thoughtcontrolscotland.com/2018/05/30/nhs-england-sees-35-increase-in-patients-waiting-more-than-18-weeks-while-nhs-scotland-reports-a-fall-of-0-2-despite-a-14-6-increase-in-demand/