diff --git a/tools/test/topos/uk.py b/tools/test/topos/uk.py
new file mode 100644
index 0000000..09e6468
--- /dev/null
+++ b/tools/test/topos/uk.py
@@ -0,0 +1,84 @@
+#!/usr/bin/env python
+
+"""
+"""
+from mininet.topo import Topo
+
+class UkTopo( Topo ):
+    """Internet Topology Zoo Specimen."""
+
+    def __init__( self ):
+        """Create a topology."""
+
+        # Initialize Topology
+        Topo.__init__( self )
+
+        # add nodes, switches first...
+        LONDON = self.addSwitch( 's1' )
+        BRISTL = self.addSwitch( 's2' )
+        BIRMHM = self.addSwitch( 's3' )
+        PLYMTH = self.addSwitch( 's4' )
+        DOVER  = self.addSwitch( 's5' )
+        BRGHTN = self.addSwitch( 's6' )
+        LIVRPL = self.addSwitch( 's7' )
+        YORK   = self.addSwitch( 's8' )
+        NWCSTL = self.addSwitch( 's9' )
+        NRWICH = self.addSwitch( 's10' )
+        EDBUGH = self.addSwitch( 's11' )
+        ABYSTW = self.addSwitch( 's12' )
+
+
+        # ... and now hosts
+        LONDON_host = self.addHost( 'h1' )
+        BRISTL_host = self.addHost( 'h2' )
+        BIRMHM_host = self.addHost( 'h3' )
+        PLYMTH_host = self.addHost( 'h4' )
+        DOVER_host  = self.addHost( 'h5' )
+        BRGHTN_host = self.addHost( 'h6' )
+        LIVRPL_host = self.addHost( 'h7' )
+        YORK_host   = self.addHost( 'h8' )
+        NWCSTL_host = self.addHost( 'h9' )
+        NRWICH_host = self.addHost( 'h10' )
+        EDBUGH_host = self.addHost( 'h11' )
+        ABYSTW_host = self.addHost( 'h12' )
+
+        # add edges between switch and corresponding host
+        self.addLink( LONDON, LONDON_host )
+        self.addLink( BRISTL, BRISTL_host )
+        self.addLink( BIRMHM, BIRMHM_host )
+        self.addLink( PLYMTH, PLYMTH_host )
+        self.addLink( DOVER,  DOVER_host )
+        self.addLink( BRGHTN, BRGHTN_host )
+        self.addLink( LIVRPL, LIVRPL_host )
+        self.addLink( YORK,   YORK_host )
+        self.addLink( NWCSTL, NWCSTL_host )
+        self.addLink( NRWICH, NRWICH_host )
+        self.addLink( EDBUGH, EDBUGH_host )
+        self.addLink( ABYSTW, ABYSTW_host )
+
+        # add edges between switches
+        self.addLink( LONDON, BRISTL, bw=10, delay='1.0ms')
+        self.addLink( LONDON, BRISTL, bw=10, delay='1.0ms')
+        self.addLink( LONDON, BIRMHM, bw=10, delay='1.0ms')
+        self.addLink( BRISTL, BIRMHM, bw=10, delay='1.0ms')
+        self.addLink( BRISTL, PLYMTH, bw=10, delay='1.0ms')
+        self.addLink( LONDON, PLYMTH, bw=10, delay='1.0ms')
+        self.addLink( LONDON, DOVER,  bw=10, delay='1.0ms')
+        self.addLink( LONDON, BRGHTN, bw=10, delay='1.0ms')
+        self.addLink( DOVER,  BRGHTN, bw=10, delay='1.0ms')
+        self.addLink( BIRMHM, LIVRPL, bw=10, delay='1.0ms')
+        self.addLink( BIRMHM, YORK,   bw=10, delay='1.0ms')
+        self.addLink( NWCSTL, YORK,   bw=10, delay='1.0ms')
+        self.addLink( NWCSTL, LIVRPL, bw=10, delay='1.0ms')
+        self.addLink( LONDON, YORK, bw=10, delay='1.0ms')
+        self.addLink( LONDON, YORK, bw=10, delay='1.0ms')
+        self.addLink( LONDON, NRWICH, bw=10, delay='1.0ms')
+        self.addLink( DOVER, NRWICH, bw=10, delay='1.0ms')
+        self.addLink( YORK, NRWICH, bw=10, delay='1.0ms')
+        self.addLink( YORK, LIVRPL, bw=10, delay='1.0ms')
+        self.addLink( NWCSTL, EDBUGH, bw=10, delay='1.0ms')
+        self.addLink( LIVRPL, EDBUGH, bw=10, delay='1.0ms')
+        self.addLink( LIVRPL, ABYSTW, bw=10, delay='1.0ms')
+        self.addLink( BRISTL, ABYSTW, bw=10, delay='1.0ms')
+
+topos = { 'uk': ( lambda: UkTopo() ) }