As I said earlier, I don't know what it is; but due to the fact that in the rate rules it says ID required, I would venture to guess that it is either a company, or a travel group similar to AAA where one would have some kind of ID or membership card. Whether the front desk asks for it or not is what is being bantered about here and while it seems to be the general consensus that they don't, keep in mind murphy's law and buyer beware. If you use this code and they ask for ID, then be prepared to deal with it.

Just playing around on the website -- tried XML for a couple of properties in London.

The "Leisure Links" rate came back (~175 GBP), but every time there was also an "Escapes in Europe" rate that was about 30-40 GBP cheaper per night.

Neither one had any ID requirements lised.

OK - for definiteness, I checked out the Ren Chancery and Grosvenor House, dates in mid-January. See for yourself -- the numbers look pretty good.

[Edit] As luck would have it, some of the dates I picked at random were weekends. Still, 102 GBP per night at the Chancery is not too shabby.

If you have used XML rate - was the breakfast included?

Thanks!

Yes, when I used it at the Chancery Court in October, breakfast was included. On the website, click on "rate rules" to get this information.

Was it described as "Escapes in Europe" or as "Leisure Links rate"? The rules for stay I'm considering say nothing except "Leisure Links rate".

Chancery Court XML rate (Escape in Europe) rules contain this info:

"ESCAPE IN EUROPE
ONLY EMPLOYEES OF BELOW COMPANIES ARE ENTITLED TO THIS RATE
- ASTRAZENECA, BARCLAYS, CFS, JP MORGAN, PHILIPS, PWC, SIEMENS,
TRINITY MIRROR, ACCENTURE, DELOITTE, FORD, IBM, PEPSICO-YUM"

PD, were you asked for some sort of ID?

No, I was not asked for ID, but the rate rules did not indicate that any ID would be required. I have noticed that sometimes the rate rules for XML will say "ID required", sometimes not. I think the rate I had was called something like "weekend escape."

Rate describtion - Breakfast not more included ??
 

Just searched for XML rate in LEJ. I wonder, because in the describtion of the rate nothing said about breakfast. 2 Months ago i still could read "Breakfast included".

Has it changed ?

Here's my two cents on what you found two months ago and what you are finding now.

I think that MR is changing some of the rate rules and rate benefits by code. I had a dispute with MR and it was basically that I was told that I had double points on the rate code, it didn't post, I requested it and was told that it expired the month prior to my stay. Well the rate code was still showing double points after MR told me it expired. I just looked again and the rate code doesn't offer the double points. I would tend to believe that marriott is changing some of their codes and associated benefits.

My understanding of XML is “Leisure Links” is a Marriott term for weekend discounts given to employees of various large corporations for their personal leisure travel. It goes without saying that these companies do a lot of business with Marriott. When it comes to showing ID it would be for IBM or Pfizer or whatever. My company intranet site has a link to the Marriott leisure link page and populates the XML code when I click through to make a reservation. No idea how Marriott knows what company the employee works for when booking the rate… I guess they probably do not know.

correct and there is a list

Yes XML will
 

It has for me every single time. This code as I understand is 10% of lowest weekend rate.