Cisplatin and infusional 5-fluorouracil (5-FU) has become regarded as the standard chemotherapy for squamous cell carcinoma (SCC) of the head and neck. Results of phase II studies vary widely and do not always reflect the activity of regimen in general clinical practice. We have treated 20 consecutive patients with cisplatin 100 mg/m2 and 5-FU given as a 4-day infusion at 1 g/m2 for 24 h. In order to reflect more accurately the activity of this regimen in everyday practice we have followed as many patients as possible to relapse and death and measured the duration of remissions from the end of treatment. 6 patients responded (30%, 95% CI: 10-48%) with 1 patient achieving a complete remission. Partial remission lasted for 3-18 months and the complete remission lasted for 7 months. Median survival of patients from the date of first treatment was 7 months (range 1 week-20.5 months). The regimen was well tolerated but required hospitalisation. We conclude that this regimen is well tolerated, active and a good choice for treating recurrent SCC of the head and neck in an unselected population of patients with recurrent disease in the context of everyday oncological practice.