Skip to Content
50% Off Second Room img

50% Off Second Room

Bring the family on your next adventure and enjoy 50% off your 2nd room.

{"staticContent":{"maxGuestPerRoom":"8","cancel":"Cancel","disableRecentlyViewed":"true","rooms":"Rooms","recentSearchesHeading":"Recent Searches","dataLayer":{"offers-searchform-0ae7eda925":{"@type":"mi-aem-offers-spa/components/offers-searchform","repo:modifyDate":"2025-05-28T07:38:17Z"}},"dateFormat":"ddd, MMM DD","ctaLabel":"Book Now","trackingProperties":{"additionalTrackingVariables":"","enableScrollingBehavior":false,"trackingDescription":"","impressionTrack":false,"description":"","trackingContentPosition":"","atCCeVar48":"","rightArrowDesc":"","cardLocation":"","leftArrowDesc":"","clickTrack":false,"location":"","merchandisingCategory":"","impressionCount":false,"trackingTag":"","trackingOfferType":""},"variation":"single-property-offer","isAuthor":"","disableTopDestination":"true","path":"/content/experience-fragments/mi-aem-offers-spa/na/en-us/site/offers-searchform/master/jcr:content/root/responsivegrid/offers_searchform","cqType":"mi-aem-offers-spa/components/offers-searchform","children":"Children","id":"offers-searchform-0ae7eda925","disableFloatingBehavior":"false","destinationsListItems":[],"selectLabel":"SELECT","ageLabel":"Age","currentLocationLabel":"Current Location","add":"Add","storefrontPropertySearchWidgetErrorMessageRooms":"You may reserve up to three rooms in one reservation process. To reserve 4-9 rooms, please reserve an initial 3 rooms and repeat the reservation process until your desired number of rooms have been reserved.","hideFlexibleDatesCheckbox":"false","datesPlaceholderText":"Add Date","flexibleAlertMessage":"Flexible date searches cannot be completed requesting more than 3 rooms. Please revise your search","months":"January,February,March,April,May,June,July,August,September,October,November,December","enablePadding":"false","maxGuestsMsg":"Max: {x} total guests/room","weekdays":"S,M,T,W,T,F,S","night":"Night","dates":"Dates","done":"Done","recentlyViewedHeading":"Recently Viewed","roomListItems":[{"roomQuantity":"1"},{"roomQuantity":"2"},{"roomQuantity":"3"}],"clearRecentLabel":"Clear Recent","flexible":"Flexible","enableOverlayTopWithVideo":"false","reset":"Reset Fields","childAgeRequired":"Child {x}: Age (Required)","guest":"Guest","weekdaysShort":"Sun,Mon,Tue,Wed,Thu,Fri,Sat","mobilePlaceholderText":"Where are you going?","componentId":"hxyubdvmfmtpeeyh","checkInLabel":"Check In","adults":"Adults","destination":"Destination","maxChildAge":"17","title":"Search Participating properties","remove":"Remove","ageBasedRatesLabel":"Prices may vary by age","unitOfRoom":"","myDatesFlexibleLabel":"My dates are flexible","roomsGuestsHead":"Rooms & Guests","localDateFormat":"MM/DD/YYYY","offersRateNotAvailable":"The special rate is not available for the dates you requested.","orderingRecentlySearchedAndViewed":"Recently Searched","weekdaysLong":"Sunday,Monday,Tuesday,Wednesday,Thursday,Friday,Saturday","hideDestination":"hideDestination","applyLabel":"Apply","placeholderTextPopularDestination":"Popular Destination ","yearLabel":"year","lessThanLabel":"Less than 1","enableOverlap":"true","enableOverlapTop":"true","room":"Room","firstDayOfWeek":"0","nights":"Nights","guests":"Guests","checkOutLabel":"Check Out","monthsShort":"Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec","desktopPlaceholderText":"Where are you going?","usePointsCertificates":"Use Points","wcmMode":"disabled","disableRecentlySearched":"true","requestId":"/offers/50-off-second-room-off-145452/longr-sheraton-grand-london-park-lane~X~01D5AD12-1B18-5AC8-8AAD-82B649A0A6B9","acceptLang":"en-US","marshaCode":"LONGR","offerId":"OFF-145452"}}
==========>>hideDestination
Experience the perfect London get-away with the whole family and enjoy 50% off your second room with us!

Discover the city's historic landmarks, museums and the Royal Parks right on our doorstep.

Not a Marriott Bonvoy member? Join now for additional discounts.

How to Book

Be sure that the Promotional Code appears in the Corporate/Promotional code box when making your online reservation, or call +442074996321 and ask for the promotional code. For toll-free numbers outside the US please visit Global Reservation Numbers

Need to Know

More Offers At This Property

Great Gatsby Afternoon Tea

Great Gatsby Afternoon Tea

Proud partner of the Tony Award®-winning musical at London Coliseum
Let Every Stay Take You Further. Up to 10,000 Bonus Points Await.

Let Every Stay Take You Further. Up to 10,000 Bonus Points Await.

Stay a minimum of 2 nights and get up to 10,000 bonus points per stay across the Middle East & Africa and select European destinations.
Afternoon Tea Package

Afternoon Tea Package

Experience a luxurious Stay with Afternoon Tea in the heart of Mayfair.
Stay Longer, Save More

Stay Longer, Save More

Save 20% on Longer Stays.
Weekend Brunch at Mercante

Weekend Brunch at Mercante

Free-Flowing Weekend Brunch at Mercante Restaurant
Kids Stay and Eat Free

Kids Stay and Eat Free

Quality family time without the price tag with Marriott Bonvoy.