asked the Secretary of State for Education and Science what changes in membership have been reported to his Department by the teachers' unions represented on the Burnham committee since 31 December; and what is the latest total membership of each union provided to him.

Teacher unions were asked for and provided numbers of fully paid-up members as at 31 December 1984 who were statutorily entitled to salaries determined by the Burnham primary and secondary committee and paid accordingly by avant LEA in England and Wales—that is "Burnham-relevant" figures—as follows:

	Numbers
Assistant Masters' and Mistresses' Association (AMMA)	64,636
National Association of Schoolmasters/Union of Women Teachers (NAS/UWT)	115,611
National Union of Teachers (NUT)	216,138
Professional Association of Teachers (PAT)	21,260
National Association of Head Teachers (NAHT)	19,952
Secondary Heads' Association (SHA)	3,939

Two associations have provided later figures. AMMA has indicated that its Burnham-relevant membership bad increased to 73,654 by July 1985. PAT has not provided a later Burnham-relevant figure but has said that total membership increased from 27,902 on 31 December 1984 to 35,832 in October.