Only one of the six strong class has survived into preservation, following the efforts of the late Viscount Garnock who bought No.61994 The Great Marquess from British Railways (BR), and had the engine overhauled to working order.
Based at Leeds No.3442 undertook railtour work until forced into retirement by the ban imposed on steam working by BR in 1968.
From 1972 No.3442 was stored on the Severn Valley Railway (SVR) until 1980 when it was overhauled.
In the mid 2000s No.3442 was bought by John Cameron and the locomotive left the SVR for overhaul at Crewe.

Following the completion of its overhaul at Crewe it was returned to service on the mainline alongside visiting heritage railways around the UK, during its mainline career it has visited many places that none of the K4's visited during their working careers for the LNER and BR.
Places it has visited in recent years include: Carlisle, Barrow Hill, Redmire, York, Manchester, Whitby & Blaenau Ffestiniog.
It even proved popular working railtours up the "Conwy Valley Line" from Llandudno Junction to Blaenau Ffestiniog, the routes gradient being 1 in 47 heading towards Blaenau.

It is now retired and will be housed at a museum to be built on John Cameron's farm, along with 60009 Union of South Africa.
Only one of the six strong class has survived into preservation, following the efforts of the late Viscount Garnock who bought No.61994 The Great Marquess from British Railways (BR), and had the engine overhauled to working order. Based at Leeds No.3442 undertook railtour work until forced into retirement by the ban imposed on steam working by BR in 1968. From 1972 No.3442 was stored on the Severn Valley Railway (SVR) until 1980 when it was overhauled. In the mid 2000s No.3442 was bought by John Cameron and the locomotive left the SVR for overhaul at Crewe. 
Following the completion of its overhaul at Crewe it was returned to service on the mainline alongside visiting heritage railways around the UK, during its mainline career it has visited many places that none of the K4's visited during their working careers for the LNER and BR. Places it has visited in recent years include: Carlisle, Barrow Hill, Redmire, York, Manchester, Whitby & Blaenau Ffestiniog. It even proved popular working railtours up the "Conwy Valley Line" from Llandudno Junction to Blaenau Ffestiniog, the routes gradient being 1 in 47 heading towards Blaenau. 
It is now retired and will be housed at a museum to be built on John Cameron's farm, along with 60009 Union of South Africa.
LNER Class K4