2AAA. Pilgrim Hospital, Sibsey Road, Boston, Lincolnshire Thanks to Dwight for informing me of these Survivors. Installed in the car parks and on the roadways around the hospital site are a number of 5 m tubular steel columns supporting CU Phosco P178 post-top lanterns. Although some of the lanterns run high pressure sodium (SON) lamps, others have been converted to accommodate retro-fit LED 'corn' lamps instead. With the first part of the hospital having opened in 1971, followed by the construction of other departments in subsequent years, until the hospital's official opening in 1977, some of the P178s may be of similar vintage, with the SON lighting itself being a conversion from mercury vapour (MBF).

Many of the lanterns were operating when I visited in July 2023 - this example is seen with the main hospital building behind it, and numerous other P178s visible between the two.

The light output is under-exposed in this view; in reality, it was much brighter, even taking the daylight into account.

Much of this P178's bowl was missing, revealing the retro-fit 'corn' lamp within the lantern.

The new lamp looks far too large for the lantern.

The new lamp is made by 'Bright Source'. Notice the Wago-type connectors employed that connect the incoming supply cable directly into the lampholder - the old lamp control gear not being required following the LED conversion.

This P178 is attached to an unpainted galvanised CU-made column, and may be a newer addition.

The close-up view reveals that the canopy is not positioned quite correctly on top of the bowl.

By comparison, this P178 looked considerably older - its canopy had lost all of its black paint, and the polycarbonate bowl had discoloured.

This example was another to have been converted to LED.

The colour temperature of the LED lamp was comparable to that of an MBF lamp.

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