I just wanted to thank everyone who gave me advice in my last thread about some lodger issues I'd been having.
This included long running issues with one being generally slightly hostile in the full two years she's lived with me, the second lodger being upset that she doesn't have a full floor to herself (which I never gave the impression she'd have and she's paying a standard room rate, not full floor rent), overhearing general bitching and moaning about me and the cat, and then culminating with one lodger being completely livid (shouting and literally snarling at me) for siting at the kitchen table for a quick chat to a recruiter. (For context I sit there once in the blue moon but she felt this should be space reserved for her and the other lodger due to the fact that I have an additional work from home space and don't pay rent)... While I don't pay rent - in the flat that I own - I obviously pay the mortgage, bills and expenses.
The bitching and moaning about me that I partially overheard was apparently just about me sitting at the kitchen table that one time. But the fact that they were comfortable launching straight into a vitriolic moan about me, made me suspect they've had a couple of conversations like this before. For context, I'd say I'm fairly easy to live with. I don't have house rules and I'm fairly friendly and supportive. It's always been important to me that the lodgers feel comfortable in my home and that it is also their home.
Unfortunately when I posted the thread, someone thought I was a troll (due to someone not believing that one of my lodgers would tell me about being in a deposit dispute with her previous landlord and the reason why) and mumset deleted the thread. They've since realised I'm not a troll (I'm a regular poster but changed my user name for this thread) but I requested for the original thread to remain deleted as it contained personal details.
However, I wanted to post an update and say thank you for the feedback and also to the person who posted the assertiveness booklet which I've been reading and have found useful.
So for my update... a couple of days after I created the thread I did give both lodgers notice. I do feel a bit sad about the second lodger leaving as I mostly enjoyed having her stay. But I'd just reached my tolerance limit with the first one and felt I should ask both to leave especially as they have become close.
It's been a little frosty, especially with the first lodger (the one who told me not to sit at the kitchen table) but so far so good.
There has been a bit of oddness which I'd usually brush off but I'm now reading a bit of an eff-you to me (shutting themselves in the kitchen with loud music, leaving oil or something similar on the kitchen floor, smearing some sort of red paint on the kitchen floor and cat mat this morning, making a bit of noise outside my room first thing in the morning etc...) but I've decided to ignore and count down the days until they go.
When I gave them notice, I didn't mention anything at all about their behaviour as a reason. I kept it all quite positive and told them that unfortunately I need to isolate to help out my sick mum at short notice. This is true, and she is possibly looking at surgery soon. But the fact that neither of them have actually asked how my mum is (especially the one who has been with me for a while and who I've been really supportive of over the years), has also made me realise I made the right decision.
Most of you recommended for me to give them two weeks notice but in the end I have them a month... so hopefully not too much drama over that time.
Anyway, that's my update. I'm not a troll and I've taken everyone's advice. 
Life is too short of a frosty home environment, especially when you can't actually go anywhere for the foreseeable. But onwards and upwards.