SS - a sketch

I was working with clients on their Cotswolds holiday last week and on one particular day, a visit to Worcester Cathedral, I forgot to pack the camera.  However, 'cause I carry my sketchbook everywhere, I attempted a quick portrait.  I think it's kosher to do that, right?  I'm not broadcasting his identity, I'm not breaking confidentiality, am I?  If I am, tell me so.  Anyway, here it is.  I'm proud of this sketch.