Well, to keep updated who's interested in any development of my incoming adventure, I'd like to reiterate that I'd do anything in my power to avoid being "slaved" by any intermediate while in London.
Still I must admit that the proposals I've just received by two Agencies seem quite promising.. I might put 'em to the test without any obbligation or compromise of mine, and then decide whether to continue with 'em or cut any further contacts!!
I'd like also to inform you that I'm planning to make "fishing" in the Lobby or Bar of a posh 5* Hotel where the wealthiest visitors to London use to stay, an integral part of my activities...
My feeling is that I might be quite successful there...

Does anybody disagree?? 

Dear Cuddly.  Maybe "fishing"  is working in Portugal.  But I would like to clarify that it is prohibited in the UK ! If the police find you,  for exmple in public hotel bar or pub , when you do this, you can be charged with a crime and deported from the country. I recommend that you read in internet what you can, and cannot do without serious consequences.

...." Sex work can be prostitution, stripping or lap dancing, performing in pornography, phone or internet sex, or any other sexual services in return for money, goods, or other agreed items.
Sex workers and the law.The exchange of sexual services for money is legal in the UK (apart from in Northern Ireland where it's illegal to pay for sex).
But, these related activities are illegal under the Sexual Offences Act 2003:
soliciting (trying to get clients) on the street or other public place, including someone in a vehicle
paying for the services of a sex worker who's forced or threatened into it
owning or managing a brothel (any premises which is used by more than one person for sex work)
pimping (someone who has control over sex workers and the money they earn)
advertising sexual services, including putting cards in phone boxes."....

But, these related activities are illegal under the Sexual Offences Act 2003:
soliciting (trying to get clients) on the street or other public place, including someone in a vehicle

Thanks a lot for all the precious advices, dear Greta!

But in the case you are referring to, I'm not thinking of breaking any law, let me explain:
-What I do here in Lisbon and would do in London too, in exactly the same approach, it's NOT SOLICITING, but just talking back to whom addresses me in a Bar or Lobby, accepting to have a drink together if he proposes to.
And then IF AND WHEN he asks me to "go further", explain my conditions...

A hotel or bar is private property and not a public place, so the soliciting laws don't apply there (it's a public order offence relating to streets/thoroughfares and also public telephones). You will be regularly asked to leave if you're blatant or guests complain about you making a nuisance of yourself, and you need a hide like a rhino.

The point about the police is a very good one though - since you plan to work in the UK illegally, if you have to call them for any reason (an attack or a robbery for example) then whilst it's unlikely you'll be charged with anything you will be deported, and you won't be coming back any time soon.

Good morning to ya all!I hope this post will interest not only Amy & Greta, who have been particularly kind to me, but that will inform everybody who'd like to know more about SW for a foreigner in UK:Since I had realized that my plans would have put me in an illegal position, which might have implied serious problems if caught by police without a work-permit, I went researching for more information about the matter, first online in specialized sites, and eventually, yesterday afternoon, recurring to direct professional advice given during an anonymous phone-call with a consultant linked to the UK Embassy/Consulate here in Portugal.So, apparently, there is a sort of Catch-22 which would impede me, and hundreds of women in the same position, to be legally accepted as sex-workers expecting to be professionally available in the UK, and even prepared to apply for a work-permit and pay the subsequent taxes on their incomes.No application stating that SW is the purpose of the moving to your country is bound to be accepted!!!! 

Hi Cuddly, no you're not going to get a work permit to be a sex worker  I'm sure there are other legal routes to live in the UK and become self employed if that's what you're aiming for.

Dear Flo, I may share your thinking, but the reality is that they are not making it easy for me...
It'd be quite a long and cumbersome process, I'm understanding.

do not come here on a tourist visa with your suitcase full of lingerie and a phone linking to any escort activity because you will get turned over in immigration pretty fast.

Dear Ana, your analysis of the situation is pretty accurate, I must admit!
The only objection of mine, though, is that quite rarely Immigration check the luggage of a tourist coming from Portugal, so, really, they cannot know before I'm caught "in the act", can they?

The only objection of mine, though, is that quite rarely Immigration check the luggage of a tourist coming from Portugal, so, really, they cannot know before I'm caught "in the act", can they?

Probably not the first time, no.

If you keep coming and going at regular intervals then almost certainly - I've had my bags turned out twice in a year (once at Heathrow and once at Gatwick) on my way back from New York, and I'm a British national. They may well let you through fine, then stop you on the way out and you get to tell them why you have all this cash you're convinced you're going to make.

But I'm sure you have an answer for that too, so I'm going to bow out and leave you to it.

Cuddly, with all my due respects but you sound a bit on the naive side of things.

But I'm sure you have an answer for that too, so I'm going to bow out and leave you to it.

Well, very dear Ana & Amy, while I truly appreciate your comments and advices, let me explain a litlle more about myself, in order to give you a more accurate picture of what are my plans..
I understand I might seem quite naive at times, but, in fact, I'm not terribly stupid: so far, in life, I've been achieving a lot of what I intend to.
So, yeah, I'm truly convinced that Immigration will not represent a serious obstacle to my escorting in UK.
Sure, at the first glance, my aspect might be suspicious, but, if questioned, I'd explain and prove I have an Australian PhD in Biochemistry and a lot of professional connections with British scientists in various Universities, and I can even forward phone-numbers to make a confirmation possible...