In the UK, the altitude restrictions are there as a guidance and you are only expected to comply "when instructed by ATC" as stated on the STAR charts. If you have any doubt if a restriction is needed and you are nearing top of descent to make that restriction, just tell ATC "if you need FL*** by <point> then we need descent in *nm's".
It is a shame the coalface workers don't get involved too much in producing these charts as there are some restrictions added that just aren't needed and others omitted that are regular occurrences! Getting them changed after publication seems near impossible
