diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index abef9d1..9126e05 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -16,11 +16,11 @@ A clear and concise description of what the bug is.
 2. Run command '...'
 3. See error
 
-## ✅ Expected Behavior
+## ✅ Expected Behaviour
 
 A clear and concise description of what you expected to happen.
 
-## ❌ Actual Behavior
+## ❌ Actual Behaviour
 
 What actually happened instead.
 
diff --git a/docs/CODE_OF_CONDUCT.md b/docs/CODE_OF_CONDUCT.md
index e8dc33f..dacfdd4 100644
--- a/docs/CODE_OF_CONDUCT.md
+++ b/docs/CODE_OF_CONDUCT.md
@@ -14,7 +14,7 @@ diverse, inclusive, and healthy community.
 
 ## Our Standards
 
-Examples of behavior that contributes to a positive environment for our
+Examples of behaviour that contributes to a positive environment for our
 community include:
 
 * Demonstrating empathy and kindness toward other people
@@ -25,7 +25,7 @@ community include:
 * Focusing on what is best not just for us as individuals, but for the
   overall community
 
-Examples of unacceptable behavior include:
+Examples of unacceptable behaviour include:
 
 * The use of sexualised language or imagery, and sexual attention or
   advances of any kind
@@ -39,8 +39,8 @@ Examples of unacceptable behavior include:
 ## Enforcement Responsibilities
 
 Community leaders are responsible for clarifying and enforcing our standards of
-acceptable behavior and will take appropriate and fair corrective action in
-response to any behavior that they deem inappropriate, threatening, offensive,
+acceptable behaviour and will take appropriate and fair corrective action in
+response to any behaviour that they deem inappropriate, threatening, offensive,
 or harmful.
 
 Community leaders have the right and responsibility to remove, edit, or reject
@@ -58,7 +58,7 @@ representative at an online or offline event.
 
 ## Enforcement
 
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
+Instances of abusive, harassing, or otherwise unacceptable behaviour may be
 reported to the community leaders responsible for enforcement at
 .
 All complaints will be reviewed and investigated promptly and fairly.
@@ -73,12 +73,12 @@ the consequences for any action they deem in violation of this Code of Conduct:
 
 ### 1. Correction
 
-**Community Impact**: Use of inappropriate language or other behavior deemed
+**Community Impact**: Use of inappropriate language or other behaviour deemed
 unprofessional or unwelcome in the community.
 
 **Consequence**: A private, written warning from community leaders, providing
 clarity around the nature of the violation and an explanation of why the
-behavior was inappropriate. A public apology may be requested.
+behaviour was inappropriate. A public apology may be requested.
 
 ### 2. Warning
 
@@ -106,7 +106,7 @@ Violating these terms may lead to a permanent ban.
 ### 4. Permanent Ban
 
 **Community Impact**: Demonstrating a pattern of violation of community
-standards, including sustained inappropriate behavior,  harassment of an
+standards, including sustained inappropriate behaviour,  harassment of an
 individual, or aggression toward or disparagement of classes of individuals.
 
 **Consequence**: A permanent ban from any sort of public interaction within
diff --git a/docs/README.md b/docs/README.md
index b3d2501..a92322c 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -58,7 +58,7 @@ Centralized bash script to manage multiple game launchers (EA Desktop, GOG Galax
 - ✅ Wine prefix management (init, backup, restore, purge)
 - ✅ Z: drive mount control (for disk space reporting fixes)
 - ✅ Comprehensive robustness libraries (Lutris/Heroic compatible)
-- ✅ GPU acceleration optimized (NVIDIA RTX tested)
+- ✅ GPU acceleration optimised (NVIDIA RTX tested)
 
 ## Quick Start
 
@@ -77,7 +77,7 @@ cd /path/to/wine-gaming
 # 1. Install Proton-GE (one time only)
 ./setup install-proton
 
-# 2. Initialize Wine prefix with dependencies
+# 2. Initialise Wine prefix with dependencies
 ./setup init
 
 # 3. Install all launchers
@@ -105,7 +105,7 @@ cd /path/to/wine-gaming
 ### Wine Prefix Management
 ```bash
 ./setup purge                       # Delete prefix, start fresh
-./setup init                        # Initialize with dependencies
+./setup init                        # Initialise with dependencies
 ./setup full                        # Complete setup: purge + init + install-all
 ./setup quick                       # Quick: reinit deps + install remaining apps
 ./setup backup                      # Backup DLLs and packages
@@ -302,13 +302,13 @@ The script installs comprehensive dependencies used by Lutris and Heroic:
 - **Graphics**: d3dcompiler, d3dx9-11, dxvk, vkd3d, d9vk
 - **Audio**: directmusic, faudio, xact, directplay, directshow
 - **System**: vcrun*, dotnet*, corefonts, gdiplus, physx, msctf
-- **GPU**: Optimized for NVIDIA RTX (DXVK, shader cache enabled)
+- **GPU**: Optimised for NVIDIA RTX (DXVK, shader cache enabled)
 
 See `init()` function for full library list.
 
 ## Performance Tuning
 
-### GPU Optimization (for launchers with embedded browsers)
+### GPU Optimisation (for launchers with embedded browsers)
 Edit `launch_app()` function to adjust:
 ```bash
 export __GL_SHADER_DISK_CACHE=1              # Improve framerate
@@ -316,7 +316,7 @@ export __GL_THREADED_OPTIMIZATION=1          # Multi-threaded rendering
 export DXVK_HUD=0                            # Hide DXVK overlay
 ```
 
-### CPU Optimization
+### CPU Optimisation
 ```bash
 # For faster winetricks installation, add to ~/.bashrc:
 export WINETRICKS_DOWNLOAD_TIMEOUT=60
@@ -359,12 +359,12 @@ Want to add another launcher?
 
 ## Issues & Limitations
 
-- ⚠️ **Wine drive letters in file dialogs**: Custom drive letters (D:, E:) don't always show in Proton app dialogs; Z: at "/" is Wine standard behavior
+- ⚠️ **Wine drive letters in file dialogues**: Custom drive letters (D:, E:) don't always show in Proton app dialogues; Z: at "/" is Wine standard behaviour
 - ⚠️ **Z: drive warnings**: "Read access denied" errors are harmless; use `suppress-z-warnings` to mute
 - ✅ **GPU acceleration**: Tested on NVIDIA RTX 2060+ (DXVK v2.4.1)
 - ✅ **Disk space reporting**: Use `unmount-z` before EA Desktop's disk checks
 
-## License
+## Licence
 
 MIT - Free to use and modify
 
@@ -375,6 +375,6 @@ MIT - Free to use and modify
 - ✅ Automatic installer detection
 - ✅ Z: drive mount/unmount management
 - ✅ Comprehensive robustness libraries (Lutris-compatible)
-- ✅ GPU acceleration optimized
+- ✅ GPU acceleration optimised
 
-See git history for full changelog.
\ No newline at end of file
+See git history for full changelog.
diff --git a/docs/SECURITY.md b/docs/SECURITY.md
index 39ff6bc..1efe195 100644
--- a/docs/SECURITY.md
+++ b/docs/SECURITY.md
@@ -40,7 +40,7 @@ This security policy applies to:
 - Official releases
 - Documentation
 
-## Acknowledgments
+## Acknowledgements
 
 We appreciate responsible disclosure and will acknowledge security researchers who report valid vulnerabilities.
 
diff --git a/lib/prefix.sh b/lib/prefix.sh
index 318b7bf..a8f676e 100644
--- a/lib/prefix.sh
+++ b/lib/prefix.sh
@@ -70,7 +70,7 @@ restore() {
 
 # Initialise a fresh Wine prefix with all required dependencies.
 init() {
-    print_info "Initializing Wine prefix..."
+    print_info "Initialising Wine prefix..."
 
     mkdir -p "${HOME}/.config/winetricks"
     touch "${HOME}/.config/winetricks/enable-latest-version-check"
@@ -96,7 +96,7 @@ init() {
     wine reg add "HKEY_CURRENT_USER\Software\Wine\Direct3D" /v "VideoMemorySize" /t REG_SZ /d "8192" /f >/dev/null 2>&1 || true
     wine reg add "HKEY_CURRENT_USER\Software\Wine\Direct3D" /v "CSMT"           /t REG_SZ /d "enabled" /f >/dev/null 2>&1 || true
 
-    print_success "Wine prefix initialized"
+    print_success "Wine prefix initialised"
 }
 
 # Helper: install one app with local-installer preference.
@@ -205,7 +205,7 @@ configure_wine_drives() {
     local dosdevices_dir="$WINEPREFIX/pfx/dosdevices"
 
     if [ ! -d "$dosdevices_dir" ]; then
-        print_warning "Wine prefix not initialized yet, skipping drive configuration"
+        print_warning "Wine prefix not initialised yet, skipping drive configuration"
         return 1
     fi
 
diff --git a/web-ui/README.md b/web-ui/README.md
index b49f376..8319ee0 100644
--- a/web-ui/README.md
+++ b/web-ui/README.md
@@ -81,7 +81,7 @@ PORT=3001 npm start
 - Check browser console (F12) for errors
 - Check server terminal output
 - Verify `./setup` script exists in parent directory
-- Ensure Wine prefix is initialized: `../setup init`
+- Ensure Wine prefix is initialised: `../setup init`
 
 ### "Output stuck at 'Running...'"
 - Long operations (install-all) may take 30+ minutes
@@ -113,6 +113,6 @@ WINE_DIR=/custom/wine/path   # (would need server.js modification)
 - [ ] Log file viewer
 - [ ] Multi-language support
 
-## License
+## Licence
 
 MIT - Same as main project