Bought a tool to remove the oil filter housing, should it be very tight to get off. Just don't want to break it

Yes it is tight, make sure you are turning it the right way because if you are doing it from below it will be opposite to what you think. Don't think you would be able to break it, the thread is long and has a narrow pitch so it takes a while to unscrew it and can account for the tightness. Just double check which way you are turning it, easy mistake !

Not sure about LR but would imagine its the same, but the filter housing top on the new MINI is given a specific tightening torque when you put it back, ignore this at your peril, because if you do it by feel, thats about right sort of thing, and overdo it, you'll never get it off next time.
Plus some are done up by Gorillas anyway at the garage too

It has an o-ring seal at the top, which, if not properly lubed when installed, it's pretty hard to unscrew...
And it goes quite deep when screwed in completely.

Cheers, will give a go tomorrow

It is tight, a right mare used a 27mm spanner but had to take the large pipe off in front of it, thinkits the super charger pipe. Then its fairly easy. Lost some skin off the nuckles though.

Never had to take anything off, but I always loose some skin off the knuckles, no fun unless you don't get any battle scars!