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Record: 10235 (26/09/2023)
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Numbers Carried
Company Number Date From
London, Midland & Scottish Railway 5721 on 26/08/1936
British Railways 45721 m/e 08/1948

Names Carried
Date From Name
26/08/1936 IMPREGNABLE

Locomotive Specifics
Designer W. Stanier
Class 6P
Company History LMS
Rebuild History
ClassFrom
Jubilee26/08/1936
Wheels 4-6-0
Builder Crewe Works
To Service Sat 26/08/1936
Withdrawal Sat 09/10/1965
Service Life 29 yrs, 1 mth , 13 dys

Disposal
Scrapping During 03/1966 at Cashmore's (Great Bridge)

Allocations
Code Subsequent Codes Name From Date
    (New) on 26/08/1936
1A   Willesden on 01/01/1948 (Snapshot)
3B   Bushbury w/e 28/05/1949
5A   Crewe North w/e 01/10/1949
8A   Edge Hill w/e 25/02/1950
5A   Crewe North 4w/e 29/01/1955
12B   Carlisle Upperby w/e 07/11/1959
5A   Crewe North w/e 01/07/1961
16F   Burton w/e 04/04/1964
8K   Bank Hall w/e 10/10/1964
     Withdrawn on 09/10/1965

SLS Allocations*
Type Code Name From Date
ALLOC 3B Bushbury w/e 19/04/1947
ALLOC 1A Willesden w/e 21/06/1947
ALLOC 3B Bushbury w/e 28/05/1949
ALLOC 5A Crewe North w/e 01/10/1949
ALLOC 8A Edge Hill w/e 25/02/1950
ALLOC 5A Crewe North 4w/e 29/01/1955
ALLOC 12B Carlisle Upperby 4w/e 28/11/1959
ALLOC 5A Crewe North 4w/e 01/07/1961
ALLOC 16F Burton 4w/e 04/04/1964
ALLOC 8K Bank Hall w/e 10/10/1964
WDN   w/e 09/10/1965

* Stephenson Locomotive Society data - raw and not yet cross-referenced

Mentions ...
Report Date Title Report Source
31/01/1949 Crewe Works Locomotives entering Works during January included Nos. C.D. No. 7, 2236, 2428/46/53/74, 2562/79/80/98, 2624/74/85/86, 4777, 4812/23/68/76, 4965, 5103/6/29/49, 5200/22/84/94, 5317/18/53/54/72/75/83, 5427/49, 5516/24/94/98, 5650/65/84, 5719, 6111/18/22/28/45/46/64, 6204/50, 7181, 7937/51/73/81/85, 8007/80/93/96, 8177/99, 8220/5, 8327/38/45/47, 8417/24/35/42, 8501/2, 8607/28/49, 8705/23/70, 8892/4, 8909/35, 9217/27/90, 9386, 25673, 27591, 27635, 28337, 42150, 42225, 42458, 42589, 42619, 44753/66, 44822/70, 45027/76, 45513/30/65/72/89, 45618/60/85, 45721, 46220/21/29/39, 46603, 48004, 48114, 49307. During the past month new construction accounted for a further six Class '5' 4-6-0's of Order E472. They were completed as follows:- Nos. 44729 (7/1), 44730 (12/1), 44731 (17/1), 44732 (24/1), 44733 (28/1) and 44734 (3/2); the last three engines of this order are already in an advanced state of completion. The latest 'Patriot' Class 4-6-0 to be rebuilt is No. 45522-completed on 21/1; at the present time no more are in hand.
Since the cessation of hostilities the former L.M.S.Rly. have fitted several different types of speedometer to certain of their 4-6-0 locomotives. These experiments were carried a stage further last month when during W.E. 22/1 Class '7P' No. 46257 was fitted with a Smiths type speedometer driven from the pony truck axle, the generator being mounted on the left-hand axlebox.
Ex L.N.W. 'Cauliflower' 0-6-0's. Nos. 58409/12 were fitted for snowplough duties during the same week. The equipment includes ex-tended cab roofs, and look-out windows (similar to those seen on many brake vans) mounted on the cab sides.
Since October last, several 'Dean' 0-6-0 pannier tanks have undergone heavy repairs here; those having passed through Works to date include Nos. 2021/67, 2100/09/11/15/27/50/84/85. All have had their numberplates painted red, with the numerals scoured bright. Another ex L. & Y. 0-6-0ST has been added to the stud of Works' shunting locomotives-No. 11444, which now brings the total of ex L. & Y. engines represented to three.
SLS/194903

Summary
Date Event Details Source See Also
26/08/1936 To Service To service as London, Midland & Scottish Railway Number 5721, name: IMPREGNABLE
Built at Crewe Works
   
01/01/1948 Allocation Allocation Snapshot - Willesden (1A)    
08/1948 Renumbered Renumbered to 45721    
28/05/1949 Allocation Reallocated to Bushbury (3B)    
01/10/1949 Allocation Reallocated to Crewe North (5A)    
25/02/1950 Allocation Reallocated to Edge Hill (8A)    
29/01/1955 Allocation Reallocated to Crewe North (5A)    
07/11/1959 Allocation Reallocated to Carlisle Upperby (12B)    
01/07/1961 Allocation Reallocated to Crewe North (5A)    
04/04/1964 Allocation Reallocated to Burton (16F)    
10/10/1964 Allocation Reallocated to Bank Hall (8K)    
09/10/1965 Withdrawn Condemned as 45721    
03/1966 Scrapped Broken up by Cashmore's: Great Bridge    

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