diff --git a/lib/pact_broker/ui/controllers/matrix.rb b/lib/pact_broker/ui/controllers/matrix.rb
index ad5eeb8f9..1448ba7f0 100644
--- a/lib/pact_broker/ui/controllers/matrix.rb
+++ b/lib/pact_broker/ui/controllers/matrix.rb
@@ -1,5 +1,5 @@
 require 'pact_broker/ui/controllers/base_controller'
-require 'pact_broker/ui/view_models/matrix_line'
+require 'pact_broker/ui/view_models/matrix_lines'
 require 'pact_broker/matrix/parse_query'
 require 'pact_broker/logging'
 require 'haml'
@@ -29,7 +29,7 @@ class Matrix < Base
               errors = matrix_service.validate_selectors(selectors)
               if errors.empty?
                 lines = matrix_service.find(selectors, options)
-                locals[:lines] = lines.collect{ |line| PactBroker::UI::ViewDomain::MatrixLine.new(line) }
+                locals[:lines] = PactBroker::UI::ViewDomain::MatrixLines.new(lines)
               else
                 locals[:errors] = errors
               end
@@ -45,7 +45,7 @@ class Matrix < Base
           selectors = [{ pacticipant_name: params[:consumer_name] }, { pacticipant_name: params[:provider_name] } ]
           options = {latestby: 'cvpv', limit: 100}
           lines = matrix_service.find(selectors, options)
-          lines = lines.collect{ |line| PactBroker::UI::ViewDomain::MatrixLine.new(line) }.sort
+          lines = PactBroker::UI::ViewDomain::MatrixLines.new(lines)
           locals = {
             lines: lines,
             title: "The Matrix",
diff --git a/lib/pact_broker/ui/view_models/matrix_line.rb b/lib/pact_broker/ui/view_models/matrix_line.rb
index 56ef3b303..fe6ad4411 100644
--- a/lib/pact_broker/ui/view_models/matrix_line.rb
+++ b/lib/pact_broker/ui/view_models/matrix_line.rb
@@ -12,6 +12,7 @@ class MatrixLine
 
         def initialize line
           @line = line
+          @overwritten = false # true if the pact was revised and this revision is no longer the latest
         end
 
         def provider_name
@@ -153,6 +154,14 @@ def verification_status_class
             else ''
           end
         end
+
+        def overwritten?
+          @overwritten
+        end
+
+        def overwritten= overwritten
+          @overwritten = overwritten
+        end
       end
     end
   end
diff --git a/lib/pact_broker/ui/view_models/matrix_lines.rb b/lib/pact_broker/ui/view_models/matrix_lines.rb
new file mode 100644
index 000000000..df1b9ee0b
--- /dev/null
+++ b/lib/pact_broker/ui/view_models/matrix_lines.rb
@@ -0,0 +1,29 @@
+require 'pact_broker/ui/view_models/matrix_line'
+
+module PactBroker
+  module UI
+    module ViewDomain
+      class MatrixLines < Array
+
+        def initialize rows
+          lines = rows.collect do | row |
+            PactBroker::UI::ViewDomain::MatrixLine.new(row)
+          end
+
+          super(lines.sort)
+
+          # Don't have a URL to view ovewritten pact revisions, so don't show a link for them until we do
+          line_group_ids = []
+          each do | line |
+            line_group_id = [line.consumer_name, line.consumer_version_number, line.provider_name, line.provider_version_number]
+            if line_group_ids.include?(line_group_id)
+              line.overwritten = true
+            else
+              line_group_ids << line_group_id
+            end
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/pact_broker/ui/views/matrix/show.haml b/lib/pact_broker/ui/views/matrix/show.haml
index 8178facc2..584e6bd61 100644
--- a/lib/pact_broker/ui/views/matrix/show.haml
+++ b/lib/pact_broker/ui/views/matrix/show.haml
@@ -114,8 +114,11 @@
                 .tag.label.label-default
                   = tag.name
         %td.pact-published{'data-sort-value' => line.pact_published_order}
-          %a{href: line.pact_publication_date_url}
-            = line.pact_publication_date
+          - if !line.overwritten?
+            %a{href: line.pact_publication_date_url}
+              = line.pact_publication_date
+          - else
+            = "#{line.pact_publication_date} (overwritten)"
         %td.provider{'data-sort-value' => line.provider_name}
           %a{href: line.provider_name_url}
             = line.provider_name