From 1 July 2014 all ISAs will become New ISAs (NISAs). See the New ISA - Frequently Asked Questions (PDF 23K).
TISA (Opens new window) - the Tax Incentivised Savings Association, the industry-funded association representing the interests of over 100 member firms comprising stockbrokers, banks, fund managers, life offices, building societies, friendly societies, distributors, consultants and third-party administrators.
TISA publishes a consolidation of the ISA Regulations and a list of Junior ISA providers, both of which are available to non-members of the association. Links to both these can be found on the TISA homepage using the link above.