You can get cages to go arround your Birdtable or ground feeder to exclude bigger birds, while letting in tits etc, If on a budget you can also build your own with wire netting, unfortunately both of these will also shut out thrushes and blackbirds too so make sure you feed outside of the cage too.
You can also feed fat bells and things that recquire them to be upside down, most starlings cant cope with this.
Big choice on here
http://shopping.rspb.org.uk/mall/dep...tpage.cfm/rspb
mind you IMO starlings are misunderstood, they are becoming endangered and you should just feed them with everything else - I'd be more concerned about the giant wood pigeon.