Squadrons SR/AER - 150 to 227
| Dates | Unit | Higher Formation |
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| Squadrons - Supplementary Reserve/Army Emergency Reserve | ||
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| . | 38 CRE Works | . |
| 1953 | Formed | . |
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| . | 39 CRE Works | . |
| 1953 | Formed | . |
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| . | * Indicates that a squadron number was previously utilized in the TA. | . |
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| . | 150 Railway Maintenance Squadron RE | . |
| 1947 | Formed | 19 Railway Group |
| . | 1957: Assigned 19 Railway Regiment RE when formed and renamed 150 Railway Squadron RE | 19 Railway Regiment Affiliated to BR Eastern Region |
| . | 1965: Transferred to RCT | . |
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| . | 151 Railway Maintenance Squadron RE | . |
| 1947 | Formed | 18 Railway Group |
| . | 1957: 18 Railway Group disbanded | . |
| . | 1965: Transferred to RCT | . |
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| . | 152 Railway Traffic Squadron RE | . |
| 1947 | Formed | 18 Railway Group |
| . | 1957: Assigned 60 Railway Regiment RE when formed and renamed 152 Railway Squadron RE | 60 Railway Regiment Affiliated to BR Scottish Region |
| . | 1961: Disbanded | . |
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| . | 153 Railway Traffic Squadron RE | . |
| 1947 | Formed | 19 Railway Group |
| . | 1957: Assigned 19 Railway Regiment RE when formed and renamed 153 Railway Squadron RE | 19 Railway Regiment Affiliated to BR N Eastern Region |
| . | 1965: Transferred to RCT | . |
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| . | 154 Locomotive Running Squadron RE | . |
| 1947 | Formed | 18 Railway Group |
| . | 1957: Assigned 18 Railway Regiment RE when formed and renamed 154 Railway Squadron RE | 18 Railway Regiment Affiliated to BR Western Region |
| . | 1961: Disbanded | . |
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| . | 155 Railway Squadron RE | . |
| 1947 | Formed | 80 Railway Workshop Regiment RE |
| . | 1957: Assigned 60 Railway Regiment RE when formed | 60 Railway Regiment Affiliated to BR London Midland Region |
| . | c1956: Disbanded | . |
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| . | 156 Squadron RE | . |
| 1947 | Formed | 83 IWT Regiment RE |
| . | 1957: Assigned 18 Railway Regiment RE when formed renamed 156 Railway Squadron RE | 18 Railway Regiment Affiliated to BR Southern Region |
| . | 1965: Transferred to RCT | . |
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| . | 157 Locomotive Running Squadron RE | . |
| 1947 | Formed | 19 Railway Group |
| . | 1957: Assigned 19 Railway Regiment RE when formed and renamed 157 Railway Squadron RE | 19 Railway Regiment |
| . | 1965: Transferred to RCT | . |
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| . | 158 Railway Survey Squadron RE | . |
| 1947 | Formed | 18 Railway Group |
| . | 1957: 18 Railway Group disbanded | . |
| . | 1961: Disbanded | . |
| . | . | . |
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| . | 159 Railway Survey Squadron RE | . |
| 1947 | Formed | 19 Railway Group |
| . | 1957: 19 Railway Group disbanded | . |
| . | 1965: Transferred to RCT | . |
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| . | 165 Port Squadron RE | . |
| 1947 | Formed | 81 Port Regiment RE |
| . | 1965: Transferred to RCT | . |
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| . | 166 Port Squadron RE | . |
| 1947 | Formed | 81 Port Regiment RE |
| . | 1965: Transferred to RCT | . |
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| . | 167 Port Squadron RE | . |
| 1947 | Formed | 81 Port Regiment RE |
| . | 1965: Transferred to RCT | . |
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| . | 168 Port Squadron RE | . |
| 1947 | Formed | 82 Port Regiment RE |
| . | 1961: Disbanded | . |
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| . | 169 Port Squadron RE | . |
| 1947 | Formed | 82 Port Regiment RE |
| . | 1961: Disbanded | . |
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| . | 170 Port Squadron RE | . |
| 1947 | Formed | 82 Port Regiment RE |
| . | 1961: Disbanded | . |
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| . | 171 Port Squadron RE | . |
| 1947 | Formed | 82 Port Regiment RE |
| . | 1961: Disbanded | . |
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| . | 172 Port Squadron RE | . |
| 1947 | Formed | 81 Port Regiment RE |
| . | 1965: Transferred to RCT | . |
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| . | 173 Port Squadron RE | . |
| 1947 | Formed | 82 Port Regiment RE |
| . | 1961: Disbanded | . |
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| . | 174 IWT Squadron RE | . |
| 1947 | Formed | 83 IWT Regiment RE |
| . | 1965: Transferred to RCT | . |
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| . | 175 IWT Squadron RE | . |
| 1947 | Formed | 83 IWT Regiment RE |
| . | 1961: Disbanded | . |
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| . | 176 IWT Squadron RE | . |
| 1947 | Formed | 83 IWT Regiment RE |
| . | 1965: Transferred to RCT | . |
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| . | 198 Resources Squadron RE | . |
| 1961 | Formed | . |
| . | 1 Apr 1967: Transferred to TAVR as 198 Field Park Squadron RE (V) | . |
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| . | *205 Plant Squadron RE | . |
| 1951 | Formed | 111 Plant Regiment RE |
| . | 1961: Disbanded | . |
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| . | *224 Plant Squadron RE | . |
| 1951 | Formed | 111 Plant Regiment RE |
| . | 1961: Disbanded | . |
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| . | *227 Plant Squadron RE | . |
| 1951 | Formed | 111 Plant Regiment RE |
| . | 1961: Reorganized as 227 Field Squadron RE (and regiment redesignated 111 Corps Engineer Regiment) | . |
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