diff --git a/app/services/address_client.rb b/app/services/address_client.rb
index 3fca0a0d0..2d5289eb0 100644
--- a/app/services/address_client.rb
+++ b/app/services/address_client.rb
@@ -46,6 +46,7 @@ private
       key: ENV["OS_DATA_KEY"],
       maxresults: @options[:maxresults] || 10,
       minmatch: @options[:minmatch] || 0.4,
+      fq: ["COUNTRY_CODE:E"],
     }
     uri.query = URI.encode_www_form(params)
     uri.to_s
diff --git a/app/services/uprn_client.rb b/app/services/uprn_client.rb
index 8dcd2e7a0..b61bc1ec3 100644
--- a/app/services/uprn_client.rb
+++ b/app/services/uprn_client.rb
@@ -49,6 +49,7 @@ private
       uprn:,
       key: ENV["OS_DATA_KEY"],
       dataset: %w[DPA LPI].join(","),
+      fq: ["COUNTRY_CODE:E"],
     }
     uri.query = URI.encode_www_form(params)
     uri.to_s