Thanks for the replies, useful food for thought.
The bracket at SJSC looks interesting. I have a TL-LD 1100 which is not listed in the description of the bracket, however I cannot trace the existence of a TL-LD 110 either! I wonder ... maybe next time I am ordering stuff from SJSC I might add that in since it doesn't cost too much.
Some time ago I did buy a Tubus Vega rack using Cateye part CA5342250 to attach the light, however the Tubus is very very high above the rear mudguard, and with it's narrow width a laden saddle bag becomes a bit unstable, and frankly it looks ridiculous.
I am currently using the B&M light bracket, http://www.sjscycles.co.uk/product-Busch-and-Muller-Busch-and-Muller-Rear-Carrier-Light-Bracket-for-D-Toplight-Light-583.htm
but it is untidy, the hebie bracket would be neat if the cateye bracket works with the TL-LD 1100. I will update sometime if that works.