I've been down the river several times this year to see how things are progressing.  In February I noticed that the main perch was gone and that there was much flood debris along the river caught up in low hanging branches.  So on the 10th April I had a "Big Gardening Day!"   In my trusty chest waders (what a sight) I set about clearing the debris and giving the area a good check-over.  With a bow saw I removed the branches which were choking the river's flow leaving a much clearer expanse for the Kingfishers to dive into.  I returned again yesterday (19th April) and sat back for an hour to see if there was any activity.  A truly beautiful female kingfishers flew on to the newly erected perch for a minute or two.  She then flew several metres down river close to last year's nest and after another few minutes departed.  Sadly I was without my camera but I will return next week and hopefully I can post a couple of images. 

Thing are looking promising .... I'll keep you posted.