So he doesn't expect anything at all, not even sex? Is he gay? Having an attractive young woman next to him and nothing?

Like I said, I'd sleep in his bed, implying I'd have sex with him as payment for using his home to do incalls from.
Blackmail me? he has known my personal private details for well over 6 months now, we had no contact for easily over 3 months, I contacted him first after that time to see how he was doing, if he wanted to blackmail me he could have easily done so already.

He has the "couldn't care less attitude" he's very down to earth, nothing about him is freaky or anything, he isn't nosey and such.

Main thing I'd be concerned about is if you have a problem with a client, will you feel able to go to report any incident to the police?

Why not? I don't know if our arrangement is legal though? if it isn't then we can't go ahead with this.
Besides, I quite like it knowing he would sometimes be in the other room when I'm with a client, like my own personal bouncer if someone gets abusive.

Having men visiting you isn't illegal, what you doing isn't illegal itself, no one can arrest your or let your family know as long as you are over 18. The only trouble here would be the neighbours but if you are sensible and discreet it shouldn't be a concern. He would be the only person to get in trouble if he is renting the flat ,using it for immoral purpose etc. but then again you can pose as a couple and say you got friends visiting sometimes - they would have to prove otherwise so none of anyones business as long as your clients behave well too when coming in & out.

If I (sex worker) was to work from a male friends home (only his name on the mortgage), and perhaps even sometimes if he was in the living room while I worked from a bedroom, is this legal or would he be classed as a pimp or running a brothel? even if he has nothing to do with controlling what I get up to?
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This got me thinking. A prostitute has to have a place to work from for it to be legal. But the laws forbid it from happening because the person you pay rent to (or payment in kind ie sex), even an hotel room... would make a gain? therefore the only way to be fully legal is if you work from your own home - mortgage or owned?

Since the introduction of the Sexual Offences Act 2003, it's been 'control for gain', not - as previously - merely 'living on the earnings of prostitution'. You now need both elements, control and gain, for it to be a problem. So here, is there any element of control? If you arrange all your own bookings etc, no. It'd also help if you can use it as and when you like.

The brothel aspect comes from the 1956 Sexual Offences Act, and only applies to places where more than one person is offering sex. They don't have to do it at the same time, it doesn't have to be sexual intercourse on offer, and they don't even have to charge (but in practice the police have stopped caring about that one). So, would he be making this offer to anyone else? Even if he is, it's not your problem - you don't 'own' it, or 'run' it - it's his.

One other bit of the 1956 Act that was never repealed says that someone in charge of a property needs to have the freehold before they can knowingly allow someone else's prostitution there. In practice, no-one is charged with this if they merely rent the place, and again if it applies here, it's his problem not yours.