NHS England expects all 48 radiotherapy centres to begin offering the targeted treatment, which could spare about 3,500 men 15 doses.
Thousands of men in England will receive high-powered precision radiotherapy known as SABR, slashing treatment sessions from 20 to five for low- and intermediate-risk prostate cancer patients.
Professor Peter Johnson, NHS national clinical director for cancer, said the technology focuses a precise beam directly on tumors to limit healthy cell damage; the technique already treats lung and brain cancers.
Suffolk resident Edwin Lambert, 70, participated in trials and described the precision therapy as "easier to deal with" compared to traditional methods, resuming archaeological planning within five weeks of treatment.
NHS England expects all 48 radiotherapy centers to offer the treatment "within weeks," with Rylance of Prostate Cancer calling it "wonderful news" for thousands gaining access to this revolutionary radiotherapy.
Of the 55,000 men diagnosed annually, around 17,500 are deemed low or intermediate risk, with modelling suggesting around 3,500 will likely choose this radiotherapy option as Prostate Cancer charities hope access expands further.