I am looking to offer a discounted courier service, am I allowed to do that here?

[CourierExpress]

I assume not as I cannot see anything in regards to people offering services, but just wanted to double check

 

[fisicx]

Advertising and self promotion is not permitted. What you can do is upgrade your membership and create a signature to promote your service.

 

[DontAsk]

See https://www.ukbusinessforums.co.uk/threads/what-constitutes-self-promotion.416063/