i also have an estate and basically you need to get shot of that dumpy little aerial and use the standard aerial,
i say this because when i first brought mine i fitted a dumpy aluminium aerial and reception was c**p so it came straight off
i know the standard one does not look all that pretty but it is functional
Not only is it functional its designed to do the job for FM reception. All aerials have a center frequency, the factory fit are a 1/4 wave length which is centered for 98 Mhz, and then wrapped arround a fibre rod to reduce its length, for MW and LW the aerial acts as a tip as the whole aerial and aerial lead is used for reception.
As for these so called alloy bee stings they may look cool to some, (not my cup of tea) but are really not working for fringe reception areas. Never measured one but looking at them I would guess thier center frequency would work out in the UHF band, probally work better for your TV than FM.