How do you sign kindness in british language?

You can't "sign" kindness in the British language in the same way you would sign a word in sign language. "Kindness" is a concept, not a word with a specific hand gesture.

However, you can *express* kindness in British language through:

* Words: Saying "thank you," "please," "you're welcome," or "that's kind of you."

* Actions: Offering help, doing something nice for someone, or simply being polite and considerate.

* Gestures: Smiling, making eye contact, or giving a small wave.

Ultimately, kindness is shown through thoughtfulness and compassion, regardless of the specific language used.