Click coming from timing chain x type 2.0 jaguar

If the noise is definately from the front engine timing chain cover area then the first thing i would do is remove the auxillary drive belt/fan belt then start the engine to see if noise is still there? if so the only option is to remove the front engine cover and from remember you may have to remove the cylinder heads also, even remove engine for access\,big job, the engine is normally a bullet proof unit, if the oil has been changed at service advised intervals then the hydraulic chain tensoiner etc should be ok and most noise problems at the front of engine area are caused by. ie. belt tensioner, air con compressor,pas pump etc. so if noise goes when aux belt removed look at the that area. hope this helps.