We present an analysis of regular timing observations of the high-magnetic-field Rotating Radio Transient ( RRAT ) J1819 - 1458 obtained using the 64-m Parkes and 76-m Lovell radio telescopes over the past five years . During this time , the RRAT has suffered two significant glitches with fractional frequency changes of 0.6 \times 10 ^ { -6 } and 0.1 \times 10 ^ { -6 } . Glitches of this magnitude are a phenomenon displayed by both radio pulsars and magnetars . However , the behaviour of J1819 - 1458 following these glitches is quite different to that which follows glitches in other neutron stars , since the glitch activity resulted in a significant long-term net decrease in the slow-down rate . If such glitches occur every 30 years , the spin-down rate , and by inference the magnetic dipole moment , will drop to zero on a timescale of a few thousand years . There are also significant increases in the rate of pulse detection and in the radio pulse energy immediately following the glitches .