diff --git a/README.md b/README.md
index 9b83083..c99ac21 100644
--- a/README.md
+++ b/README.md
@@ -106,6 +106,7 @@ keywords("hip gable")
 applicant_name("Mr and Mrs Smith") # Currently Idox only
 application_type("Householder") # Currently Idox only
 development_type("") # Currently Idox only
+case_officer_code("100000") # Northgate only
 
 scrape # runs the scraper
 ```
diff --git a/lib/uk_planning_scraper/authority.rb b/lib/uk_planning_scraper/authority.rb
index 621e7a3..9c2c14b 100644
--- a/lib/uk_planning_scraper/authority.rb
+++ b/lib/uk_planning_scraper/authority.rb
@@ -70,7 +70,7 @@ module UKPlanningScraper
     def system
       if @url.match(/search\.do\?action=advanced/i)
         'idox'
-      elsif @url.match(/generalsearch\.aspx/i)
+      elsif @url.match(/\.aspx/i)
         'northgate'
       elsif @url.match(/ocellaweb/i)
         'ocellaweb'
diff --git a/lib/uk_planning_scraper/authority_scrape_params.rb b/lib/uk_planning_scraper/authority_scrape_params.rb
index 819c6e2..13d3b63 100644
--- a/lib/uk_planning_scraper/authority_scrape_params.rb
+++ b/lib/uk_planning_scraper/authority_scrape_params.rb
@@ -62,6 +62,17 @@ module UKPlanningScraper
       self
     end
 
+    def case_officer_code(s)
+      unless system == 'northgate'
+        raise NoMethodError.new("case_officer_code is only implemented for Northgate. \
+          This authority (#{@name}) is #{system.capitalize}.")
+      end
+      
+      check_class(s, String)
+      @scrape_params[:case_officer_code] = s.strip
+      self
+    end
+
     def application_type(s)
       unless system == 'idox'
         raise NoMethodError.new("application_type is only implemented for \
diff --git a/lib/uk_planning_scraper/northgate.rb b/lib/uk_planning_scraper/northgate.rb
index 252834b..e61c3d7 100644
--- a/lib/uk_planning_scraper/northgate.rb
+++ b/lib/uk_planning_scraper/northgate.rb
@@ -24,6 +24,7 @@ module UKPlanningScraper
         'csbtnSearch' => 'Search' # required
       }
 
+      # Keywords
       form_vars['txtProposal'] = params[:keywords]
 
       # Date received from and to
@@ -50,6 +51,12 @@ module UKPlanningScraper
         form_vars['dateEnd'] = params[:decided_to].to_s if params[:decided_to] # YYYY-MM-DD
       end
 
+      # Case officer code
+      if params[:case_officer_code]
+        form_vars['cboCaseOfficerCode'] = params[:case_officer_code]
+        @url.sub!('GeneralSearch.aspx', 'CaseOfficerWorkloadSearch.aspx')
+      end
+
       logger.info "Form variables: #{form_vars.to_s}"
 
       headers = {