50049 Defiance worked its last train in August 1991 and was withdrawn in August 1991 due to it needing a major scheduled exam, thereby becoming the 39th Class 50 locomotive to be withdrawn after over 22 years of active service. Its engine hours stood at 7,462.

After its withdrawal, 50049 was purchased by the Class 50 Society in December 1991. The society had been formed back in 1983 as an interest group for followers of the class. Whilst the fleet was being run-down and withdrawn, the society managed to raise sufficient funds by 1991 and form a limited company called Project Defiance to formalise the arrangements associated with the preservation and future running of the locomotive. Although 50049 was in working order when withdrawn from British Rail, some restoration work was done by society members at Laira depot. Initially, the locomotive was restored to its previously unique 50149 Railfreight livery which was completed in 1993.

Following its appearance at various open days, 50149 was moved to the West Somerset Railway in May 1994 where a heavy engine lift took place to allow the generator to be tested and cleaned, whilst the locomotive interior was refurbished and painted. More recently 50049 has worked alongside 50031 Hood on numerous railtours on the national mainline as well as service trains in South Wales.

In 2007, 50049 became part of the fleet locomotives owned and operated by The Class 50 Alliance Ltd, a company formed by the merger of The Fifty Fund and Project Defiance.

Dates: 2007-2016

50049_20070407_03

50049, "Class 50"

50049_20070407_04

50049, "Class 50"

50049_20070407_06

50049, "Class 50"

50049_20080517_01

50049, "Class 50"

50049_20080517_02

50049, "Class 50"

50049_20080517_05

50049, "Class 50"

50049_20080517_07

50049, "Class 50"

50049_20080517_08

50049, "Class 50"

50049_20080517_09

50049, "Class 50"

50049_20080517_10

50049, "Class 50"

50049_20080517_11

50049, "Class 50"

50049_20081011_01

50049, "Class 50"

50049_20081011_02

50049, "Class 50"

50049_20081011_03

50049, "Class 50"

50049_20081011_04

50049, "Class 50"

50049_20111006_01

50049, "Class 50"

50049_20111006_08

50049, "Class 50"

50049_20111006_09

50049, "Class 50"

50049_20151121_01

50035, 50049, "Class 50"

50049_20151121_02

50035, 50049, "Class 50"