I've updated the list to include the three being at Transport for Wales being stripped of parts, the two at Gascoigne Wood and the three at Botanic Gardens in Hull.
Red - withdrawn.
Orange - scrapped.
Yellow - converted to other use (does not include food tins or razor blades).
Green - modified for Passengers of Reduced Mobility.
Blue - in storage.
Purple - preserved.
Class 142
001 - Unit preserved. Due to move to the National Railway Museum in York.
002
003 - In storage at Barrow
004
005 - First to be withdrawn, now scrapped (updated as of 7th December 2019)
006
007 - In storage at Barrow
008 - Scrapped
009 - in storage at Gascoigne Wood
010
011
012 - at Landore TMD? being stripped of spare parts.
013
014
015 - in storage at Gascoigne Wood
016 - in storage at Worksop
017 - in storage at Worksop
018
019 - in storage at Worksop
020 - in storage at Worksop
021 - in storage at Botanic Gardens Hull
022 - in storage at Worksop
023
024
025 - in storage at Worksop
026 - in storage at Botanic Gardens Hull
027 - in storage at Worksop
028 - In storage at Barrow
029 - in storage at Worksop
030 - in storage at Worksop
031
032
033 - in storage at Worksop
034 - In storage at Barrow
035
036
037 - in storage at Worksop
038 - in storage at Gascoigne Wood
039 - in storage at Gascoigne Wood
040 - In storage at Barrow
041
042 - in storage at Gascoigne Wood
043
044 - Scrapped, second class 142 unit to be dismantled at CF Booths (the first being 005).
045
046 - In storage at Barrow
047
048 - in storage at Gascoigne Wood
049 - in storage at Gascoigne Wood
050 - in storage at Gascoigne Wood
051
052 - in storage at Worksop
053 - in storage at Gascoigne Wood
054
055
056 - In storage at Barrow
057 - in storage at Gascoigne Wood
058
059 - Scrapped
060 - in storage at Botanic Gardens Hull
061
062
063
064 - in storage at Worksop
065
066 - in storage at Gascoigne Wood
067
068
069
070
071
072
073
074
075
076
077
078
079 - at Landore TMD? being stripped of spare parts.
080
081
082
083
084 - in storage at Worksop
085
086 - was at Landore TMD, now at Canton being stripped of spare parts.
087
088 - Scrapped, EMR Kingsbury.
089
090
091 - in storage at Worksop
092
093 - Scrapped, EMR Kingsbury.
094
095
096 - Scrapped, EMR Kingsbury. The last of the class lost for good.
Class 143
601
602
603 - set to be preserved at the Swindon and Cricklade Railway
604
605
606
607
608
609
610
611
612
613 - Scrapped
614
615 - Scrapped
616
617
618
619
620
621
622
623
624
625
Class 144 - All units stabled at Neville Hill.
001
002
003 - set to be preserved at the Great Central Railway at Ruddington.
004
005
006
007
008
009
010
011
012 - 144 Evolution has full PRM modifications.
013
014
015
016
017
018
019
020
021
022
023