I definately sterilised bottles for the first 12 months for both my sons (1 wcf - 19 months and 1 wocf - 4 yrs). After six months I didn't sterilise dummies (pacifiers, I believe they're called over with you), bowls, spoons, etc just washed them in hot soapy water. I used the AVENT microwave steriliser - it is amazing. I have just become a great aunty so I know sterilising is definately still the done thing over here. Continuing to sterilise bottles up to 12 months is important due to bacteria growing more in milk, including any residue left inside the bottles.
Mary