MoJo
What flight level was this at?
Answer down in the weeds.
Full details at link below:
http://www.caa.co.uk/docs/423/01_07_...ed_airprox.pdf
Not sure if link will work as you have to accept conditions of viewing information. If link does not work go to UKAB website and look at January 2007 assessed airproxes. Page 73 of the pdf file is the Harrier v Tornado.
Pie