diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
index 330c865c6..17093f973 100644
--- a/CONTRIBUTORS.md
+++ b/CONTRIBUTORS.md
@@ -14,3 +14,4 @@
 | harry-shepherd   | Harry Shepherd    | Met Office  | 2026-01-08 |
 | EdHone           | Ed Hone           | Met Office  | 2026-01-09 |
 | tom-j-h          | Tom Hill          | Met Office  | 2026-01-19 |
+| t00sa            | Sam Clarke-Green  | Met Office  | 2026-01-27 |
diff --git a/rose-stem/site/meto/common/suite_config_ex1a.cylc b/rose-stem/site/meto/common/suite_config_ex1a.cylc
index a3263719e..1c7dfd7fe 100644
--- a/rose-stem/site/meto/common/suite_config_ex1a.cylc
+++ b/rose-stem/site/meto/common/suite_config_ex1a.cylc
@@ -5,7 +5,12 @@
 {# ########################################################################### #}
 {% do LOG.debug("Entered site/meto/common/suite_config_ex1a.cylc") %}
 
+
+{% if site_vars.ex_trustzone == "collab" %}
+{% set ex1a_base = 'module use /projects/metoff/spackadmin.mon/releases/2025.12.18/ngms' %}
+{% else %}
 {% set ex1a_base = 'module use /common/internal/spack/releases/2025.10.1/ngms' %}
+{% endif %}
 
 {% set ex1a_compiler_gnu =  'module switch cpe/22.11 cpe/23.05 ; ' ~
                             'module load PrgEnv-gnu ; '~
@@ -42,15 +47,17 @@
 
     [[EX1A_BUILD]]
         [[[environment]]]
-            USE_TIMING_WRAPPER=true
-            USE_VERNIER=true
+            USE_VERNIER=yes
+            USE_TIMING_WRAPPER=yes
         [[[directives]]]
             -l tmpsize=12GB
 
     [[EX1A_RUN]]
         [[[environment]]]
             {# BIG_DATA_DIR holds files for io tests #}
-{% if site_vars["host_ex"] == "exz" %}
+{% if site_vars["ex_trustzone"] == "collab" %}
+            BIG_DATA_DIR = '/data/users/lfricadmin.mon/data'
+{% elif site_vars["host_ex"] == "exz" %}
             BIG_DATA_DIR = '/common/internal/lfricdir/data'
 {% else %}
             BIG_DATA_DIR = '/data/users/lfricadmin/data'
@@ -131,6 +138,9 @@
         {{ generate_script("pre-script", [ex1a_scitools,
                                           ex1a_tech]) }}
 
+    [[EX1A_SCRIPTS]]
+        inherit=EX1A_TECH
+
     [[EX1A_PLOT]]
         inherit=EX1A_TECH_BASE
         {{ generate_script("pre-script", [ex1a_scitools]) }}
@@ -141,8 +151,12 @@
     [[EX1A_EXPORT-SOURCE]]
         inherit=METO_ORIG
         [[[environment]]]
+{% if site_vars["ex_trustzone"] == "collab" %}
+            PLATFORM_SYNC = false
+{% else %}
             hostname = $(rose host-select {{site_vars.host_ex}})
             PLATFORM_SYNC = true
+{% endif %}
 
     [[EX1A_HOUSEKEEPING]]
         inherit=EX1A_TECH_BASE
diff --git a/rose-stem/site/meto/groups/group_lbc_demo.cylc b/rose-stem/site/meto/groups/group_lbc_demo.cylc
index b9ef8faf5..7e6a0dd45 100644
--- a/rose-stem/site/meto/groups/group_lbc_demo.cylc
+++ b/rose-stem/site/meto/groups/group_lbc_demo.cylc
@@ -75,7 +75,6 @@
     }) %}
 
 {# Platform Generic Groups #}
-{% if site_vars.launch_platform == "azspice" %}
   {% do site_groups.update({
       "lbc_demo_developer": [
           "scripts",
@@ -98,7 +97,6 @@
           "lbc_demo_ex1a_canned",
       ],
       }) %}
-{% endif %}
 
 {# Platform Generic Extends #}
 {% do site_groups.developer.extend(site_groups.lbc_demo_developer) %}
diff --git a/rose-stem/site/meto/macros/macros_ex1a.cylc b/rose-stem/site/meto/macros/macros_ex1a.cylc
index 631427689..71c6df8d8 100644
--- a/rose-stem/site/meto/macros/macros_ex1a.cylc
+++ b/rose-stem/site/meto/macros/macros_ex1a.cylc
@@ -59,7 +59,11 @@
         {% set lfric_nodes = possible_nodes %}
 
     {% endif %}
+    {% if site_vars["ex_trustzone"] == "collab" %}
+            -q=collabnormal
+    {% else %}
             -q=normal
+    {% endif %}
             -l select={{ lfric_nodes +
                          ocean_nodes|int +
                          river_nodes|int +
@@ -68,7 +72,11 @@
 
 
 {% macro shared_queue(cores) %}
+    {% if site_vars["ex_trustzone"] == "collab" %}
+            -q=collabshared
+    {% else %}
             -q=shared
+    {% endif %}
             -l ncpus={{ cores }}
 
 {% endmacro %}
diff --git a/rose-stem/site/meto/variables.cylc b/rose-stem/site/meto/variables.cylc
index 540674dbd..0c9e2df2a 100644
--- a/rose-stem/site/meto/variables.cylc
+++ b/rose-stem/site/meto/variables.cylc
@@ -21,8 +21,23 @@
 {% do site_vars.update({"site_platforms": ["ex1a",
                                            "azspice"]}) %}
 
-{% do site_vars.update({"launch_platform": "azspice"}) %}
-{% do site_vars.update({"scripts_platform": "azspice"}) %}
+{# Settings for EX Collab Zone #}
+{% from "socket" import getfqdn %}
+{% set hostname = getfqdn() %}
+{% if "collab.sc" in hostname %}
+    {% do site_vars.update({"ex_trustzone": "collab"}) %}
+    {% do site_vars.update({"USE_TOKENS": true}) %}
+{% else %}
+    {% do site_vars.update({"ex_trustzone": "research"}) %}
+{% endif %}
+
+{% if site_vars["ex_trustzone"] == "collab" %}
+    {% do site_vars.update({"launch_platform": "ex1a"}) %}
+    {% do site_vars.update({"scripts_platform": "ex1a"}) %}
+{% else %}
+    {% do site_vars.update({"launch_platform": "azspice"}) %}
+    {% do site_vars.update({"scripts_platform": "azspice"}) %}
+{% endif %}
 
 {% do site_vars.update({"git_mirror_loc": "/data/users/gitassist/git_mirrors"}) %}
 
@@ -31,7 +46,9 @@
                                        "azspice": "gnu_fast-debug-64bit"} }) %}
 
 {# Choose EX Host - default to random ab or cd #}
-{% if USE_EXZ is defined and USE_EXZ %}
+{% if site_vars["ex_trustzone"] == "collab" %}
+    {% do site_vars.update({"host_ex" : "ex"}) %}
+{% elif USE_EXZ is defined and USE_EXZ %}
     {% do site_vars.update({"host_ex" : "exz"}) %}
 {% elif USE_EXAB is defined and USE_EXAB %}
     {% do site_vars.update({"host_ex": "exab"}) %}
diff --git a/rose-stem/templates/runtime/generate_runtime_control.cylc b/rose-stem/templates/runtime/generate_runtime_control.cylc
index 02193d9c4..689d58ef1 100644
--- a/rose-stem/templates/runtime/generate_runtime_control.cylc
+++ b/rose-stem/templates/runtime/generate_runtime_control.cylc
@@ -31,7 +31,7 @@
             ROSE_TASK_APP = extract_source
             DEPENDENCIES = {{dependencies}}
             USE_MIRRORS = {{USE_MIRRORS}}
-            USE_TOKENS = {{USE_TOKENS}}
+            USE_TOKENS = {{site_vars.get("USE_TOKENS", "false")}}
         {% if USE_MIRRORS %}
             {% if "git_mirror_loc" in site_vars %}
             GIT_MIRROR_LOC = {{site_vars.git_mirror_loc}}