Speaking as a someone who lives on the approach/climb out, the new ERJs are noticebly much noisier, the A318 is in the same bracket. However Newham is hardly blessed with private sector investment yet the local NIMBY's still moan......
No 146 or RJ ever had reversers, the only aircraft I recall seeing use them at LCY were the Luxair ERJ-135s. I assume the A318 too but I haven't actually seen for sure.
They don't even like APUs at LCY lest the locals be woken from their sleep before nipping down to the dole office.