Launceston is "Larnston",but I always say "Lorn-cess-ton" to annoy "Hawker" .
That might be well and good in Pommy Land but if you tried either Lanston or Lanson in Oz while referring to the Tassie Launceston, 99 times out of ten you'd become lost, as "Lorn-cess-ton" is the go 'round here.
Cheers, Rowan