If you work in London's public sector, the chances are that your organisation is already a member of ISfL. Membership is open to the 33 London boroughs (including City Corporation of London).
ISfL has a "follow the data" mantra when it comes to membership. Although the focus is primarily on local government, if another public sector body works with the councils, then there is no reason not to welcome them as a member too. This is why ISfL membership also includes The Metropolitan and City of London Police Forces, The London Fire Brigade, The GLA and London Grid for Learning as well as some NHS Trusts.
If you are not sure if your organisation is a member, drop us a line via the contact page.