Between 1997 and 2005 inclusive, 696 buildings were removed from the statutory list.
We do not hold data on decisions to de-list buildings in the format you request, and to compile it would incur disproportionate costs. Neither DCMS nor English Heritage holds data on whether de-listed buildings were subsequently demolished.
The figures for questions (a) and (b) are set out as follows:
Number 1997 144 1998 77 1999 127 2000 72 2001 70 2002 53 2003 38 2004 61 2005 54
Number 1997 1,217 1998 1,926 1999 2,276 2000 1,310 2001 804 2002 538 2003 543 2004 485 2005 554
We do not hold a central record of cases in which buildings were upgraded from I to II or downgraded from II to I, and to compile it would incur disproportionate costs.