Unvaccinated cases: 151,054
Unvaccinated deaths: 253

Vaccinated cases: 117,115
Vaccinated deaths: 481
**vaccinated = 1-2 doses

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1009243/Technical_Briefing_20.pdf

I thought the case for vaccines were that they prevented severe reactions to the virus?

Even if you argue more unvaccinated people got Delta based on this data, that even makes the case to be unvaccinated greater considering MORE people died while having the jab despite less of them having the virus!