A minimum viable UK adviser test budget is 3,000-5,000 pounds across 4-6 weeks: enough for 50-80 leads, statistical validity, and one creative refresh.
Minimum viable test
- 4-6 weeks duration - 3,000-5,000 pounds media spend - 2-3 ad sets with distinct angles - One creative refresh at week 3
Why less rarely works
At sub-1,500 pounds/month you cannot exit the Meta learning phase (50 conversions per ad set) and keyword data on Google is too sparse to optimise bids.