Community

The English (UK) dictionary erroneously includes a few American spellings, and fails to list the British equivalents.

The two I've found so far are "canceling" instead of "cancelling", and "math" instead of "maths".

Try http://textpad.com/support/feedback.php and select Type = Bug Report.
You can send one report for all three posts by including the links to them.
HTH

Thanks for pointing this out - I've done this, and just received an acknowledgement from them.