Newbie

[TRP]

BR class 37, introduced in 1960. These have a distinctive body shell with noses at each end and this is unique amongst the locomotives still in regular use (although you might catch a preserved class 40 or 55 ('Deltic') on railtour duty). The rebuilt 37s which now run as Network Rail class 97/3 also share the same body shell, but these are painted bright yellow!
https://en.wikipedia.org/wiki/British_Rail_Class_37

Current main line operators of the class 37 include Colas Rail, Rail Operations Group (ROG) & DRS, plus HNRC have members of the class for hire to the main line operators. West Coast Railway Company (WCRC) & LSL both have operational main line registered class 37s, used mainly for railtours.
More than 30 class 37s have been preserved.

Tony

[TRP]

The BR class 47 was once one of the most numerous on British Rail, but numbers are now quite low.
https://en.wikipedia.org/wiki/British_Rail_Class_47

Current operators include Great British Railfreight (GBRf) (3 locomotives), Freightliner (1 loco) & ROG (6 locos). WCRC, LSL & Vintage Trains (VT) have class 47s which are used on main line railtours.
More than 30 class 47s have also been preserved.

Tony

[TRP]

BR class 56, introduced in 1976. A number of these were built in Romania to the British Rail Engineering Limited design.
https://en.wikipedia.org/wiki/British_Rail_Class_56

The main operators of the class 56 are Colas Rail & GBRf.
Only 3 locomotives are currently preserved.

Tony

[TRP]

The class 57 are rebuilds of class 47 locomotives and so appear outwardly very similar. The rebuilds took place from 1998-2004 and included different engines and traction alternators to the originals.
https://en.wikipedia.org/wiki/British_Rail_Class_57

Current operators include DRS, GWR & ROG, plus WCRC has a fleet of class 57s primarily for railtour work.

Tony

[TRP]

The class 59 were the first class of locomotives built by General Motors Electromotive Division (GM-EMD) in the USA for use in Britain, the first five being ordered by Foster Yeoman to haul their stone trains on BR. In total, 15 were built between 1985-1995 for three different operators.
https://en.wikipedia.org/wiki/British_Rail_Class_57
All 15 are still operational with all but one now owned by Freightliner. The other locomotive (No.59003) is part of the GBRf fleet.

Tony

[TRP]

BR class 60, introduced in 1989. After mass withdrawals, a significant number have been returned to service with DB Cargo (DBC), GBRf and spot-hire company DCRail.
https://en.wikipedia.org/wiki/British_Rail_Class_60

Tony

[TRP]

The class 66, introduced in 1998, is now the most numerous in operation on Britain's railways. Like the class 59, it was built in the USA by GM-EMD and is a development of the class 59. Because of this, they share some design details and look outwardly similar.
https://en.wikipedia.org/wiki/British_Rail_Class_66
Current operators include GBRf, DBC, DRS, Freightliner & Colas Rail

Tony

[Master Cutler]

As always Tony, great source of information. Cheers.

[TRP]

The class 67 were built by Alstom in Valencia, Spain and introduced in 1999. A total of 30 were built and all still survive, although a number of the locomotives are currently stored.
https://en.wikipedia.org/wiki/British_Rail_Class_67

The majority are operated by DBC, with 2 locomotives operated by Colas Rail.

Tony

[TRP]

The class 68 locomotives were built in Spain between 2013-2017, totalling 34 locomotives.
https://en.wikipedia.org/wiki/British_Rail_Class_68

They are operated by Trans-Pennine Express (TPE), Chiltern Railways & DRS.

Tony