Spark Arrestor in Poor Condition

Insurance Companies no longer recommend the use of spark arrestors as they can become clogged like this one and can be a source of Thatch roof fires.  This one is not only in poor condition but is very close to the thatched roof.  Unfortunately when the roof was re-coated the Thatcher did not remove enough of the existing thatch and by the look of it just went over the top which has brought the new thatch very close to the top of the chimney.  The gable end picture shows this well.