Anglican Mainstream has published the following statistics, under the heading: Who are the evangelical and charismatic churches?.
They start with this comment (my emphasis added):
We are often asked about the numbers that our networks represent. In one sense the question is impossible and unnecessary because we seek to speak for all who uphold and seek orthodox teaching and leadership. However, a prominent researcher in the field of church membership, Peter Brierley, has given these figures:
The numbers then given, which are copied below, are Peter Brierley’s totals for three categories of evangelicals. This is interesting information, but it is not necessarily an answer to the second question posed above.
The English Church Census of 2005
Total number of Anglican churches 16247
Mainstream evangelicals (largely conservative) 1998 1045 2005 1411
Charismatic evangelicals 1998 1002 2005 1308
Evangelical broad 1998 1542 2005 1554
Total in 2005 4273 percentage 26%
Whole of Church of England 1998 980,000 2005 870,600
Mainstream evangelicals 1998 72,500 2005 77,400
Charismatic evangelicals 1998 114,700 2005 114,900
Evangelical broad 1998 121,400 2005 105,200
Total in 2005 297,500, percentage 34%
Average size of congregation
Mainstream evangelicals 1998 55
Charismatic evangelicals 1998 88
Evangelical broad 1998 68
Of the 160 largest churches, (1% of the total number of churches) with a membership of over 350, who make up 10% of the membership of the CofE, 83% are evangelical.
The English Church Census 2005 is available in Pulling out of the Nose Dive by Peter Brierley and Religious Trends Number 6, by Peter Brierley, published by Christian Research, September 2006.