Knight's Hill Tunnel, photographed on 11th August 2007. photograph by Gregory Beecroft

Knight's Hill Tunnel (331 yards) between North Dulwich and Tulse Hill has a very ornate southern portal, surmounted by the arms of Alleyn's College, the local landowners. The trees are hiding pilasters on each of which are two ball finials (stone spheres). This end of the tunnel can be seen from Tulse Hill station. The northern portal, which is hidden in a cutting, is quite quite plain. The tunnel was constructed as part of the London, Brighton & South Coast Railway's lines from Peckham to Wimbledon and Sutton, which opened in 1868.

Lewes Tunnel, photographed on 4th August 2007. photograph by Gregory Beecroft

Lewes Tunnel (396 yards) is immediately to the north of Lewes station, on the line to Keymer Junction. This was opened by the London, Brighton & South Coast Railway in 1847. The brick portal features a prominent string course and dentils. The tunnel is on a curve, resulting in restrictions on use of certain carriages in Southern Railway days.

Redhill Tunnel, photographed on 25th October 2008. This is the north portal, which is unusual for a tunnel in having a segmental arch profile. The southern portal is similar. photograph by Gregory Beecroft

Redhill Tunnel is on the Quarry Line, built by the London Brighton & South Coast Railway in 1899 to avoid use of South Eastern Railway lines in the Redhill area. It is 649 yards long.

Streatham Tunnel, photographed on 21st February 2009. photograph by Gregory Beecroft

Streatham Tunnel (220 yards) is one of two between Tulse Hill and Streatham. It is on a curve and most unusual in that the southern portal is a skewed arch. The portal is quite ornate, with massive stone capping, dentils and panelled brickwork.