You need a Pairing knife.
A decent Chefs Kitchen Knife- costs around £15-20
Sharpening steel, is a long metal stick for sharpening and takes a bit of practise
Standard knife sharpens are good too.
Sharpen regularly, every couple of time you cook something
If you have a good quality set it is worth taking it to a professional Knife sharpening service.
Filleting knives are very sharpe and you don't really need them for anything other than filleting, i.e. a more advance knife for more advance cooking.
A good heavy pair of scissors is quite useful.
Other Kitchen Tool Tips
A good heavy saucepan and a heavy frying pan is good.
A wok, uncoated, Bill got his from a local Indian store.
Metal spatchlers are useful and shouldn't cause any problem unless you have a teflon coated base.
"Put foil down when you grill, put foil down for most oven work, otherwise it's a mess" says Bill