diff --git a/backend/condition/README.md b/backend/condition/README.md
index 140d4585..46302cab 100644
--- a/backend/condition/README.md
+++ b/backend/condition/README.md
@@ -20,7 +20,7 @@ The processor currently supports file formats provided by **Peabody** and **LBWF
 
 The `local_runner` script allows the processor to be executed in a local environment.
 
-1. Copy a sample input file into the `sample_data/` directory.
+1. Copy sample input file(s) into the `sample_data/` directory. If working with Peabody data, you'll need the Landlord Reference / UPRN lookup file as well. 
 2. Update `local_runner.py` as required, specifically the definitions of:
    - `lbwf_path`
    - `peabody_path`