She may not have doubled up her Boylesports Irish Grand National success at Aintree on Saturday but leading woman jockey Katie Walsh was an important part of the day having been selected to act as an ambassador for the race.  This video incorporates elements of the campaign that was used to promote the racing at Aintree and resulted in a sell out crowd of 72,000 and a TV audience of 8.8 million.  That was up 4 percentage points in terms of audience share and 300,000 higher in real numbers than last year.