Previously: Shai Masot advises our undercover reporter on how to set up a pro-Israel movement in Britain.
Tensions remain high after a dispute over anti-Semitism at the Labour conference.
Wow! Oh my gosh. 
Well, I kinda...  That says it all.
In part three of The Lobby: our undercover finds himself at the centre of a scandal as he secretly records events -
- described by the media as anti-Semitic acts.
For the first time: the other side of the story.
Following decades of violence -
- a new challenge has emerged to Israel's occupation of Palestinian lands called BDS
BDS is here to stay
That's the global movement to boycott, divest, and impose sanctions on Israel,
- and expose it as an apartheid state.
The Israeli Government has responded with a campaign to rebrand the country's image.
The reason we should fight BDS is because it's wrong - it's a moral outrage.
It's an operation run by the secretive
Ministry of Strategic Affairs.
They recruit mainly former intelligence officers.
Its main task is to counter BDS worldwide.
Using an undercover reporter, AlJazeera's investigative unit exposes Israel's clandestine activities in London
- a city that has become a major battleground.
BDS campaign in many ways germinated in Britain.
You'll meet the people working to challenge BDS at every level of British  politics.
One of Israel's main targets is the Labour party.
For the first time its leader is a champion of Palestinian civil rights.
They'd be very happy to see Jeremy Corbyn no longer leader of the Labour party, for sure.
It's a covert action that penetrates the heart of Britain's democracy.
It is outrageous interference in British politics. 
It shouldn't be permitted.
It's a battle of ideas seeking to change not only how Israel's portrayed, but even how it is debated.
The Labour party is holding its annual conference in Liverpool.
For the first time, the leader of a major British party is an outspoken critic of Israel.
The Israeli Embassy has sent its senior diplomats to canvas opinion.
Our undercover reporter attends a private meeting of sympathetic Labour activists.
The ambassador, Mark Regev, 
tells them what to expect:
Ambassador Regev suggests a message that should be delivered to other Labour party members
Jeremy Newmark, the chairman of the Jewish Labour Movement, reveals how the message worked
with a close ally of Jeremy Corbyn.
Clive Lewis, MP for Norwich South. Look, it's a real pleasure to have been invited here tonight.
I've known Jeremy for over 20 years ..
Lewis's decision to condemn anti-Semitism at the JLM event, was viewed as a tactical victory for the faction
inside Labour that opposes Jeremy Corbyn.
Corbyn is the party's first openly pro-Palestinian leader.
The faction that supports him is called Momentum.
At the time, Jackie Walker was Momentum's vice chair.
She believes that reports of a crisis of anti-Semitism,  were a consequence of the same ruthless
party infighting.
Some of this would say it was mostly a constructed crisis for political ends.
I would say there is a crisis of the way that anti-Semitism is being manipulated and been used
by certain parts of  - not just the Labour party, but other parties and the media -
to discredit Jeremy Corbyn and a number of his supporters.
Let's disagree politically. I'm anti-Zionist. They are pro-Zionist. Let's have that argument.
Let's have THAT argument. Not this that's going on at the moment, no.
The day before I had a debate with Jeremy Newmark.
At one point he turned his back on the audience and whispered to me: you are a court Jew.
Now anybody who is Jewish understands what that means.
If you are being abused as a black person in the same way, you would be  been called a house nigger.
Did you report it to anyone in the party?
I told my partner and I told some friends that it had happened.
It's very hard to use a system which is so discredited, which the compliance unit is.
Shai Masot, whose job at the embassy includes liaising with pro-Israel groups in Britain,
ends the meeting with a summary of his achievements.
Back at the LFI stall, Shai and the Israeli delegation continue debating whether to wear the pro-Israeli t-shirts.
It's a genuine, genuine, it's not a ..., it's a genuine question, if you say ...
One party member was attending her first conference.
I  heard there was a Labour Friends of Israel stall.
And I thought this'd be a really could opportunity to have a dialogue.
With a group I know who have a lot of influence, it'd be interesting to hear their ideas.
So I found where this stall was.
I had no idea quite honestly who was behind the stall.
There was a woman behind the stall.
My first series of questions from memory was simply to say I was very interested to know
how a two-state solution would come about, what would be the details, not a slogan, but the details.
Supporters of a two-state solution believe that a peace deal based on national boundaries that existed in 1967,
before Israel's occupation, will one day lead to a viable Palestinian state,
but the continued growth of Israeli settlements and occupied land,
has made an independent state all but impossible.
If you look at a map of the West Bank and East Jerusalem today, you are looking at a fragmented
territory that Israel has colonized now for almost half a century.
Practically speaking, a two-state solution is just not possible under these conditions.
I was actually seeking some reassurance
that a two-state solution - that's what they were promoting - was still possible.
I said time and again I'm here to talk about the two-state solution, which you are promoting.
And this is what I'd like to learn about.
It's clear that the Israeli state - no matter which party is in power - has got absolutely no desire or inclination
to relinquish the territories occupied after 1967.
But, the questions that that throws up are the kinds of questions that people don't want to ask.
Or don't want to answer.
Anyone who supports Israel has to ask himself or herself the following question:
There are two possible scenarios and only two possible scenarios.
Either I support the new state of Israel, which is an ethnic apartheid state.
Or I support a change of regime in Israel, namely that the state and the country as a whole
would go through a genuine process of democratization  as did apartheid South Africa.
There is no third option.
The activist who came to her ask tough questions about the settlements actually, that was  her main point,
she didn't ask her about judaism or the existence of Israel, she just wanted a straight answer how does
anyone who supports Israel, justify settlements.
I was quite interested in whatever funds they had, and influence they had,
how would this bring about a two-state solution. 
That was my very basic question.
Joan Ryan falsely claimed that Jean referred to jobs in the City, London's financial centre.
It comes very clearly in the discussions that you have filmed, that the woman was not anti-Semitic.
They know it. She didn't talk like an anti-Semitic person. She was typical pro-Palestinian person who was worried
about the violations of the 
Palestinian human and civil rights.
Ryan continued to reference banking, 
a traditional anti-Semitic trope
as she left the conference hall with our undercover reporter. But Jean had never mentioned it.
At no points did I ever say that Labour Friends of Israel will get people jobs in banking in the City.
I did say, which is absolutely true, that I know the son of a friend of mine who - he believed himself-
that having some connection with LFI, didn't harm his career at all
That evening at a rally to combat anti-Semitism, organized by the Jewish Labour Movement,
Joan Ryan described her day at the stall.
By the following day word had spread about Jean's exchange at the LFI stall
Several MPs came by and expressed concern, including Jeremy Corbyn's former challenger, Angela Eagle.
As well as Jean's case, other alleged incidents of anti-Semitism involve the attempt to replace
the Labour leader, Jeremy Corbyn.
Another prominent Corbyn opponent arrives at the stall and hugs Jennifer Gerber, the director of LFI.
Labour MP Chuka Umunna asks for an update on the anti-Semitic incidents.
I am very shocked about the way she described my words to other people.
I feel very anxious, and that she should be misinterpreting me totally to other people,
I find that very very worrying.
I have no idea how she got from A to Z going from my comment, which was what it was,
to then saying he got a big job in banking. 
Maybe she believes her own trope.
If that's the word they use.
It's in a way pathetic.
But it's also worrying how such a pathetic evidence can - and we now - can be used to intimidate
Jeremy Corbyn into establishing an inquiry commission and making daily confessions that he's not anti-Semitic, and so on.
The group discusses which act of alleged anti-Semitism was worse.
Rubin believes that Jean's discussion with Joan Ryan was amongst the most serious.
I thought Labour Friends of Israel were talking about Palestine because they were promoting
a two-state solution. Now I find they don't want to talk about Palestine.
And if you do talk about Palestine, it would appear, you are kind of sucked into having an accusation of
anti-Semitism brought against you.
So they are really scratching the bottom of the barrel to make a list of 2,5 cases of anti-Semitism.
2 out of the 3, they themselves are not totally sure that they fold into their own strict definition of anti-Semitism.
Jean was unaware that her exchange with Joan Ryan had made national news.
And that a complaint of anti-Semitism was lodged.
I felt overwhelmed by being at the conference.
I had no idea that there would be so many things to go to, so many  interesting workshops to go to,
seminars at the same time as people speaking in the main hall.
My husband hadn't been very well so we actually left a day early.
Shortly after, Joan Ryan's assistant emailed Robin asking him to be a witness
to Jean's alleged act of anti-Semitism.
Despite being unsure of what he had witnessed, Richardson had no qualms about the expulsion
of a fellow Labour party member.
After Jean had left the conference, she was contacted by a Labour party investigator.
He would only say that it was about a serious incident.
I was thinking had I seen a fire take place. Had I seen someone throw a bottle.
Had I seen a fight break out. I was really racking my brain thinking what incident had I seen,
was I aware of, was I a witness to something.
And almost by return came an email that it was my conduct that was being investigated.
I was totally shocked, that was like a real bombshell.
In part 4: the senior political officer at the Israeli Embassy wants a private word
with our undercover reporter:
There seems to be a problem.
And when does lobbying become espionage?
Strikes me that this is the sort of job, which the intelligence services should do,
to have a good look at what's going on.
