TeXworks is great, but it’s even better when you enable the in-built spellchecking. It was suggested that I post this step-by-step in the hopes that it helps anyone else trying to enable the en-GB dictionary for their spellchecker.

First, you’ll need to find a .dic file and a .aff file for download. These can be found anywhere, but I swiped mine from Mozilla’s Thunderbird Extensions library. I’ve rehosted it here for convenience.

If you choose to download from the Thunderbird Extensions library, follow these steps:

  1. Right-click on the British English link
  2. Save Link as
  3. Navigate to your downloads folder
  4. You will find a folder called spell-en-GB.xpi
  5. Change the file extension to .zip

Now that you have the zip file, locate your Texworks folder. It should be in C:\Documents and Settings\Your Name\ by default. Within this folder, create a folder called “dictionaries” and extract en-GB.dic and en-GB.aff to it.

To enable the dictionary:

  1. Edit -> Preferences
  2. Set Spell-check language to British English

Now you have functional spellchecking inside your LaTeX editor.

Big thanks to A for the helpful tip.