On 4 March 1967, Nos.
7029 Clun Castle and 4079 Pendennis Castle hauled specials from Banbury and Oxford respectively to Chester, to mark the end of through trains between Paddington and Birkenhead.
These two, and six other Castles, survive in preservation.

Of the eight Castles to be preserved, six have operated in preservation.
Three were purchased from BR for preservation (4073, 4079 and 7029) with the remaining five being rescued from Barry Scrapyard.
All of the engines that have operated have also been out on the main line: nos.
4079 Pendennis Castle, 5029 Nunney Castle, 5043 Earl of Mount Edgcumbe, 5051 Earl Bathurst, 5080 Defiant and 7029 Clun Castle.

No.
4073 Caerphilly Castle was given directly to the National Collection upon withdrawal and has not run since being preserved; it can currently be found at Steam, Museum of the Great Western Railway in Swindon.
No.
7027 Thornbury Castle was in ex-Barry Scrapyard condition and is undergoing restoration.
In July 2016 it was sold from Pete Waterman to the Somerset transport firm JJP Holdings SW Limited and was transported to Weston-super-Mare on a low loader, where she was placed on a temporary track in the Crosville Motor Services bus depot.
In summer 2018 she was moved briefly to Tyseley Locomotive Works in Birmingham to make an appearance at their open weekend before moving to its planned home at the West Somerset Railway where the engine was to be restored.
It is now located at Loughborough on the Great Central Railway where it is to now be restored.
7027 will however not be restored to mainline standards as its current owner intends to run it for its first ticket at the GCR before considering future mainline certification.

Two of the eight preserved castle's nos.
5043 Earl of Mount Edgcumbe and 7029 Clun Castle are fitted with double chimneys while the remaining six are still fitted with the original singles.

4079 hauled a small number of railtours on the main line in its early preservation years before departing for Australia in 1973; it double-headed with 4472 Flying Scotsman during its visit to Australia for the Aus Steam 88 celebrations.
The engine returned to the UK in 1999 and is currently undergoing restoration at the Didcot Railway Centre.

As of 2019, only 7029 is operational and has a valid main line certificate.
Four engines are in the process of undergoing overhauls with two planned to operate on the mainline.
5043 and 5080 are both intended to operate as part of Tyseley's pool of mainline certified engines alongside fellow classmember 7029.
4079 was originaly planned to operate on the mainline following completion of its ongoing overhaul, but a later announcement by Didcot where they intend to stop operating on the mainline means it will only run on heritage railway's.
7027 on completion of restoration will only operate on heritage railways also.
5029 is being put forward for a future mainline standard overhaul, but is yet to commence.

Note: Case of re-named engines the names in bold indicate what the engine presently wears.

There is now a Haynes Owner's Workshop Manual available.
On 4 March 1967, Nos. 7029 Clun Castle and 4079 Pendennis Castle hauled specials from Banbury and Oxford respectively to Chester, to mark the end of through trains between Paddington and Birkenhead. These two, and six other Castles, survive in preservation.
Of the eight Castles to be preserved, six have operated in preservation. Three were purchased from BR for preservation (4073, 4079 and 7029) with the remaining five being rescued from Barry Scrapyard. All of the engines that have operated have also been out on the main line: nos. 4079 Pendennis Castle, 5029 Nunney Castle, 5043 Earl of Mount Edgcumbe, 5051 Earl Bathurst, 5080 Defiant and 7029 Clun Castle.
No. 4073 Caerphilly Castle was given directly to the National Collection upon withdrawal and has not run since being preserved; it can currently be found at Steam, Museum of the Great Western Railway in Swindon. No. 7027 Thornbury Castle was in ex-Barry Scrapyard condition and is undergoing restoration. In July 2016 it was sold from Pete Waterman to the Somerset transport firm JJP Holdings SW Limited and was transported to Weston-super-Mare on a low loader, where she was placed on a temporary track in the Crosville Motor Services bus depot. In summer 2018 she was moved briefly to Tyseley Locomotive Works in Birmingham to make an appearance at their open weekend before moving to its planned home at the West Somerset Railway where the engine was to be restored. It is now located at Loughborough on the Great Central Railway where it is to now be restored. 7027 will however not be restored to mainline standards as its current owner intends to run it for its first ticket at the GCR before considering future mainline certification.
Two of the eight preserved castle's nos. 5043 Earl of Mount Edgcumbe and 7029 Clun Castle are fitted with double chimneys while the remaining six are still fitted with the original singles.
4079 hauled a small number of railtours on the main line in its early preservation years before departing for Australia in 1973; it double-headed with 4472 Flying Scotsman during its visit to Australia for the Aus Steam 88 celebrations. The engine returned to the UK in 1999 and is currently undergoing restoration at the Didcot Railway Centre.
As of 2019, only 7029 is operational and has a valid main line certificate. Four engines are in the process of undergoing overhauls with two planned to operate on the mainline. 5043 and 5080 are both intended to operate as part of Tyseley's pool of mainline certified engines alongside fellow classmember 7029. 4079 was originaly planned to operate on the mainline following completion of its ongoing overhaul, but a later announcement by Didcot where they intend to stop operating on the mainline means it will only run on heritage railway's. 7027 on completion of restoration will only operate on heritage railways also. 5029 is being put forward for a future mainline standard overhaul, but is yet to commence.
Note: Case of re-named engines the names in bold indicate what the engine presently wears.
There is now a Haynes Owner's Workshop Manual available.
GWR 4073 Class