159 (Mixed) Heavy Anti-Aircraft Regiment RA (TA) was formed at Puckle Hill, Cobham in June 1942. The Regiment served in Anti-Aircraft Command for its entire existence. 159 (Mixed) Heavy Anti-Aircraft Regiment RA (TA) was disbanded in May 1945 at Thorpe Bay, Essex.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
| Jun 42 | Formed | Cobham, Kent, UK | |
| Sep 42 |  |
1 Anti-Aircraft Group, 28 Anti-Aircraft Brigade | South East England |
| Oct 43 | |
4 Anti-Aircraft Group, 44 Anti-Aircraft Brigade | North West England |
| Mar 44 | |
4 Anti-Aircraft Group, 33 Anti-Aircraft Brigade | North West England |
| Aug 44 | |
2 Anti-Aircraft Group, 35 Anti-Aircraft Brigade | South East England |
| Feb 45 | |
9 Anti-Aircraft Group, 37 Anti-Aircraft Brigade | South East England |
| May 45 | Disbanded |
Batteries
| Jun 42 | 542 (Mixed), 543 (Mixed) |
| Aug 42 | 542 (M), 543 (M), 563 (M) |
| Dec 42 | 542 (M), 543 (M), 563 (M), 614 (M) |
| Dec 44 | 542 (M), 543 (M) |
| Feb 45 | 529 (M), 542 (M), 543 (M) |