The Top Level Group of UK Parliamentarians for Multilateral Nuclear Disarmament and Non-proliferation (TLG) is a cross-party parliamentary group in the United Kingdom, whose primary focus is the advancement of the nuclear disarmament and non-proliferation agenda in Britain and internationally. It is formed of almost all the former senior Ministers of foreign affairs and defence over the last two decades and includes former Chiefs of Defence and two former NATO Secretaries General.
The Rt Hon Des Browne, former Defence Secretary, was the first convenor of the TLG, which is now led by Alistair Burt MP. The Top Level Group is administered and supported by the European Leadership Network.[1]