I've taken the plunge and got niger seed and a feeder. So far all I've seen on it is blue tits. The goldfinches are on my "box standard seed" feeder.
Greater spotted woodpecker was back for the first time yesterday on the nuts and came back again today.
Next trip when I need to buy seeds, I will get one of those "dish with a roof" type feeders to encourage chaffinches, robins, etc. and I suppose I am going to need another pole to hang it from.
Foxescombe, I used to throw peanuts on the lawn for the squirrels, but they would still go for the feeders. Hence the poles and as far as possible all metal feeders, because they used to chew through my plastic ones, have pulled perches out of the bottom of feeders, so that the bottom would fall out and it's contents and up on the ground. Fat balls used to disappear completely within hours of putting them out. At one stage last winter I had one that was trying to chew through the metal of my poles!