I reckon the noise is one of the anti-rattle springs on one of the front brakes. A slightly warped disc or gummed up disc bobbins causes the pad to rotate slightly in the caliper. look for witness marks where the top and bottom of the springs can touch the caliper.
A SLIGHT pressure on the front brake will stop it happening if it is this
A SLIGHT pressure on the front brake will stop it happening if it is this