What’s my membership number?

There are occasions when you need your membership number - one of them is when you use ATM BuyOnLine to get members’ your excellent support materials and resources for use in primary, secondary and higher maths teaching and learning.

For the personal Members’ Only area of the website you will need your number as part of the signing-in process.

Personal members

Personal members include retired members, newly-qualified teacher members, trainee (student) members and unwaged members.

Personal membership numbers should begin with a ‘P’ and be followed by 8 digits.

Institutional members

Institutional members include school, college, university, library and cluster (secondary and primary feeder school group) members.

Institutional membership numbers should begin with an ‘N’ and be followed by 8 digits.

Journal mailing label with membership number

I don’t know my existing number

Here are some ways of finding your number when you’ve mislaid it.

Next time you get a Mathematics Teaching journal keep the paper insert on which you address is printed. An example is shown here. Above the address on the paper address label is a letter followed by eight digits. This is your membership number.

Next time your journal arrives why not write the number down somewhere for future use?

The Other Way

The other (slower and more time-consuming) way: use the form below and the ATM Membership Department will email you with your number.

Identification details

This email address will be used to send you your Membership Number



Should we use this email address for all future communications?





This must be the postcode to which your copies of Mathematics Teaching are posted and/or the postcode you gave when you joined as an e-Member

Additional information

Add any information that you feel may be relevant to help us locate your membership number


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