A 'catching up' charge may be necessary when an 'existing'
lease first comes within Part I after 26 November 1996.
FA97/Sch12/Para13 deals with an 'existing' lease which is not a
Part I lease, when the test is initially applied as at 26 November
1996, but which later satisfies the conditions in paragraph 3 and
so becomes a Part I lease. Paragraph 13 imposes a 'catching up'
charge at the point the conditions are first satisfied. Thereafter
the other rules in Part I apply in the usual way.
