Saw 850 at Saltford, about 15-20 mins later than expected. It isn't an engine with a bark, more of a soft glide past on Brunel's billard table. Added some shots from the run back to Bath and London. Link below.
http://michael527.fotopic.net/c1313417.html
Lord Nelson with Cathedrals Express
Nice photos. Here's a couple at the other end of its journey - through Staines:
http://simon71.fotopic.net/c1313551.html
http://simon71.fotopic.net/c1313551.html