Last year an athlete competing internationally as part of the GB team had to personally find around £2500 just to be able to stand on the start line. This year this will at least double because of a reduction in external funding. This does not include the cost of training, training camps, races to improve world ranking or selection races, this was purely to compete at International Championships.
See here for more details and to make a donation. All donations made via that page will be granted by the Orienteering Foundation to reduce the level of GBR athlete contributions to WOC 2017.