The discovery of a pulsar closely orbiting the super-massive black hole at the centre of our Galaxy, Sgr A*, would not only supersede all previous tests of General Relativity, but it would also enable the space-time around a rotating black hole to be probed with high precision and in a model independent fashion. Pulsars in the Galactic Centre (GC) region can also be used as probes of the turbulent magnetized inter-stellar medium (ISM). As part of the Event Horizon Telescope (EHT) collaboration, the pulsar Working Group (WG) is dedicated to finding a pulsar in close orbit around Sgr A*. Combining the shape and size properties of the shadow the black hole cast on the
surrounding emission with pulsar observations would greatly enhance the measurement of black hole spin and quadrupole moment and therefore lead to a precise test of the no-hair theorem.
Here we propose to gather members of the EHT collaborations and pulsar WG to (1) make progress on the data analysis of EHT observations and other telescopes for pulsar searches and
(2) have a better understanding of the GC pulsar population and the local ISM properties