OP I feel your pain.
15 years ago we moved opposite a methodist church - for 12 years no problems at all.
They hold services and 6 times a week there is a different event - karate, choir practice etc. No problems at all.
3 years ago they started to rent it out to the 7th Day Adventists on a Saturday.
OMG the difference - 300 people attend the church on a saturday opposite us - they have 3/4 services each Saturday - so people coming and going all day - horns bibbing, people shouting, hoards of people socialising in the street right under my bedroom window.
and the NOISE - can't watch tv on a saturday with the windows open because you can't hear - can't sit in your garden because you can hear preaching through loudspeaker.
people say the same to me - why did you move by a church but it wasn't like this was 12 yeras.
like you - they hold midnight services - i had to go out one night at 11.pm and ask them why they felt it was okay to bib horns and shout in the street under my window at that time of night.
they park over our garages and block us in, leave bottles on our car and are generally a nusience.
there are certain rules for worship but what we are complaining about isn't what you would expect as "worship" i don't think.
last week we coudln't hear ourselves think for drumming - my husband went over there and there were teenages doing their band practice - amplified - the noise had gone on for 3 hours by the time we cracked and comlained.
we've tried the vicar and the council but we are not getting anywhere - not helped AT ALL by the fact that our road is tiny and there are only two houses on it.
we tried to get our neighbours invovled but they told us they "didn'tn like the sea of black faces" on the road so we dare not ever let them get invovled now due to their racism.
I thnk that the meeting on a saturday is the largest seventh day adventist meeting in the whole of the county now - 10 metres from my front door. i hate them. i want to move but husband is convinced that eventually we will get through to the council - i'm not so sure.