Gazza above your photos in Flickr is a share button, press that and there is a grab HTML/bb code button. Make sure BBcode is ticked and the size you want in the drop down menu, then just copy the code and post into the text BO in the same way you would write something.
great shot by the way
Cheers KT. Might as well post the only other one I've uploaded to flickr so far now I know how!
Nutclough Woods: Hebden Bridge by 77gazza, on Flickr