The op has stated that they share a kitchen.
we have annexes on the ground floor of our property when it was a pub.
our first lodger was with us ten years, when she needed help with the rent. The DSS housing officer came round and was extremely happy that she was a lodger in her/our annexe. She used her own door to her home, she had her own toilet with a small wash hand basin, her own shower.
The front room had a fridge, hob, kettle, toaster, cheese toasty maker, microwave, small chest freezer which her television sat on, she had a small sofa, a table and chairs overlooking the garden which she had full access to thru the french windows/patio area.
She had an alcove into her bedroom area which was a fully equipped as a bedroom - bed, wardrobes, dressing table, chest of drawers with side of the bed.
She shared the washing machine with us, the washing line, the oven in our kitchen, she did alot of batch cooking and froze it in chest freezer, we did agree where she parked her car, she was a wonderful person and I miss her dearly.
The other annexe is roughly the same.
The housing officers were pleased with what they saw, asked about taxation, I said we both work full time PAYE, but do tax returns which I showed them.
We have been extremely lucky, over 25 years of renting the two annexes, we have only had two single lodgers in one annexe, and there has been three couples in the other one.
I understand why rules and regulations need to/should be in place, but our first lodger set the president/tone, which we all were very happy with and it’s been lovely to share our home with some (only 8 over the years) very, very lovely, funny, witty, eccentric people.