yes last week there was all sorts of made up advice given out (by that I mean stuff which is just speculation with no real research base or evidence)

does anyone know how many trail centres in the UK are in areas of high Ash populations?

To my knowledge most of them are in dense coniferous woodland.

Looks like Thetford may be affected but clearly depends on how the FC deal with the outbreak

More detail here: http://www.forestry.gov.uk/chalara and a bigger map