Nobody actually tours the inside of the Houses of Parliament on these listings, so what you're really choosing is how you want to see Westminster in the context of a wider London day. The spread here is enormous, from a $26 walking tour that crams in 30-plus sights to a $441 private black cab with hotel pickup. Between those poles sit a river speedboat, a WW2-themed walk into the Churchill War Rooms, and a couple of chauffeured cab tours.
Decide by format first, budget second. If you want ground covered on your own feet and don't mind a five-hour march, the cheap walking tour is unbeatable value. If you're short on time or traveling with people who tire easily, the private black cabs do the legwork for you but you pay dearly for it. The speedboat and the WW2 walk are the specialists here, great if you already know you want that specific angle.
#1Best Value
London Sightseeing Walking Tour with 30+ sights
Five hours, 30-plus sights, and it costs less than lunch.
★★★★★ 5.0 (453 reviews)·from $26·5h 00m·
At $26.38 with a 5.0 rating across 453 reviews, this is the rare cheap tour that people genuinely rave about. You cover the big four (St. Paul's, Big Ben, Buckingham Palace, Tower of London) plus dozens more over five hours on foot. The price-to-ground-covered ratio here is hard to argue with.
★★★★★“The walking tour is at very reasonable pace and Carolina was always concerned with our safety crossing roads and keeping group together.”
— Verified traveller
What's included
- City of Westminster including Big Ben, Buckingham Palace, Westminster Abbey, Downing Street & more!
- Guided walking tour of 30+ London sights, landmarks & attractions
- City of London including Tower of London, St Paul's Cathedral, Tower Bridge, London Bridge & more!
- Memorable photo opportunities at every stop
Where you'll go: St. Paul's Cathedral · Big Ben · Buckingham Palace · Tower of London
What's good
- Cheapest option on the list at $26.38
- Flawless 5.0 rating over 453 reviews
- Enormous itinerary of 30+ sights in one go
What to know
- Five hours of walking is a real physical commitment
- No interiors or skip-the-line access, it's a see-from-outside tour
Best for: Budget travelers who like to walk and want the whole city in one sweep
Skip it if: You have mobility limits or want to actually go inside anything
#2Best value
London Sightseeing Private Black Cab Tour with Hotel Pick Up
A perfect-rated private cab, but a small sample and the top price.
★★★★★ 5.0 (332 reviews)·from $442·4h 00m·Private
This is the most expensive tour here at $441.50, with a spotless 5.0 rating, but only 332 reviews back it up versus the 1,868 on the near-identical $430 cab tour. It includes hotel pickup and hits Tower Bridge, St. Paul's, Big Ben and Westminster Abbey over four hours. Genuinely lovely, but you're paying $11 more for a thinner track record.
★★★★★“Was absolutely amazing. Rubin showed us so many hidden gems of London! He was very knowledgeable and so very friendly.”
— Verified traveller
What's included
- Private transportation
- Private tour
- Hotel pick up and drop off in central London
- Private tour guide
Where you'll go: Tower Bridge · St. Paul's Cathedral · Big Ben · Westminster Abbey
What's good
- Perfect 5.0 rating and includes hotel pickup
- Private, chauffeured, zero walking
What to know
- Highest price on the list at $441.50
- Fewer reviews than the cheaper black-cab alternative
Best for: Travelers who want hotel pickup and a private cab and aren't counting dollars
Skip it if: You'd rather have the more-reviewed cab tour for less
#3Best Private Tour
The Premier Classic London: Private Sightseeing Tour by Black Cab
The proven black-cab classic, backed by nearly 1,900 reviews.
★★★★½ 4.9 (1,868 reviews)·from $430·4h 00m·Private
At $430.39 this private black cab tour has by far the deepest review base here (1,868 reviews at 4.9), which matters a lot when you're spending this kind of money. Four hours hits Westminster Abbey, Buckingham Palace, the Houses of Parliament and Downing Street with a driver-guide doing the navigating. The volume of happy customers is the reassurance the pricier $441 cab tour can't match.
★★★★★“This was such a fantastic way to see places in London! It was personalized to us and what we wanted to see & stop at. Seb was full of information and told the best stories!! Loved this tour!!”
— Verified traveller
What's included
- Vehicle: TXE, TX4 or Mercedes Vito in black or other available colour
- Photo Opportunities and Short walks
- Pickup and drop-off only from Central London
- Professional Driver Guide
Where you'll go: Westminster Abbey · Buckingham Palace · Houses of Parliament · 10 Downing Street
What's good
- Huge, reassuring track record: 1,868 reviews at 4.9
- Private and door-to-door, no walking required
- Covers the core Westminster landmarks in four hours
What to know
- $430 is a serious outlay for four hours
- Slightly cheaper per head only makes sense split among a group
Best for: Groups or families who want a comfortable private tour with a trusted reputation
Skip it if: You're solo or on a budget, the per-person math doesn't work
#4Most Fun
High-Speed Thames River Speedboat in London
A 50-minute Thames blast past Parliament at speed.
★★★★½ 4.9 (613 reviews)·from $97·0h 50m·
For $97.12 you get a high-speed speedboat ride flying past the London Eye, Big Ben and the Houses of Parliament from the water. The 4.9 rating over 613 reviews shows it delivers on the thrill, and at 50 minutes it's the quickest option here. It's an experience, not an education, so pair it with something else.
★★★★★“It was AWESOME! I went with my 11 yr old son & it was such an adrenaline rush! We both agreed it was the highlight of our trip! The guide Sofia and Skipper Jon were both brilliant. We literally felt like we were in a James Bond chase on the Thames! It also helped that it was a gloriously sunny evening so weather conditions were perfect.”
— Verified traveller
What's included
- Lifejacket
- Expert guide
- Professional skipper
Where you'll go: London Eye · Thames River · Houses of Parliament · Big Ben
What's good
- Unique on-the-water view of Parliament and Big Ben
- Strong 4.9 rating across 613 reviews
- Short 50-minute commitment
What to know
- No real guiding or history depth
- $97 for under an hour is pricey per minute
Best for: Thrill-seekers and families wanting a fun break between sightseeing
Skip it if: You want to learn about the landmarks, not just zoom past them
#5Best for History Buffs
London in WW2 Walking Tour with Churchill War Rooms Visit
The only tour that gets you inside something worth seeing.
★★★★½ 4.9 (574 reviews)·from $100·3h 00m·
At $99.96 this three-hour WW2 walk is the pick if you want substance over sightseeing, and it actually includes a visit to the Churchill War Rooms. The 4.9 rating across 574 reviews is solid, and the route through Westminster Bridge, Whitehall and the war memorials gives the neighborhood real narrative weight. This is a themed deep-dive, not a landmark checklist.
★★★★★“There is much about Westminster area before you get to the War Rooms. But that is ok, because it’s interesting.”
— Verified traveller
What's included
- Entrance tickets to Churchill’s War Rooms
- Small groups of 15 people or fewer
- Guided walking tour of the city of Westminster
- Audio guide in the War Rooms
Where you'll go: Westminster Bridge · Battle of Britain Monument · Whitehall · Women of World War II Memorial
What's good
- Includes the Churchill War Rooms, a genuine interior visit
- Strong 4.9 rating over 574 reviews
- Focused historical storytelling rather than a rushed overview
What to know
- Narrow WW2 focus won't suit first-timers wanting the highlights
- Three hours of walking
Best for: History enthusiasts and anyone fascinated by Britain's wartime story
Skip it if: It's your first visit and you just want the classic London landmarks
#6Budget-friendly
London Private Black Cab Tour: 2 hour highlights/hotel pick-up
A shorter, cheaper private cab if two hours is enough.
★★★★½ 4.9 (569 reviews)·from $307·2h 00m·Private
At $307.27 this is the most affordable of the private black cabs, trading the four-hour tours' depth for a tighter two-hour highlights run with hotel pickup. The 4.9 rating over 569 reviews is dependable, and it covers Buckingham Palace, St. James's Palace and Westminster Abbey. Choose it when you want private comfort but not a half-day commitment.
★★★★★“Graham was an amazing tour guide who picked our family up at the hotel for this 2 hour highlight tour. I was traveling with my 10 year old daughter so wanted a smaller, more private tour and it was excellent. Graham provided insight to many of the places we visited which was great and informative for adults, but also made it fun and special for our daughter too - she got to sit in the drivers sea”
— Verified traveller
What's included
- Hotel pickup and drop off (selected hotels only)
- Local guide
- A personalized private tour (2 hours)
- Transport by private London Black Taxi
Where you'll go: Buckingham Palace · St. James's Palace · Horse Guards Parade at Whitehall · Westminster Abbey
What's good
- Cheapest private cab option at $307
- Includes hotel pickup and a 4.9 rating over 569 reviews
- Two-hour length suits a packed itinerary
What to know
- Two hours covers noticeably less than the four-hour cabs
- Still a big spend for a short window
Best for: Travelers wanting a quick private overview with pickup included
Skip it if: You want maximum ground covered, go for a four-hour cab
#7Premium option
Tower of London Early Access, Opening Ceremony and Royal London
Early Tower of London access, with Parliament as a supporting stop.
★★★★½ 4.9 (153 reviews)·from $146·4h 00m·
This $145.78 four-hour tour is really built around early access to the Tower of London and its Crown Jewels before the crowds, with the Houses of Parliament and Thames as add-ons. The 4.9 rating is excellent but rests on just 153 reviews, the smallest sample here. It's a strong pick if the Tower is your priority rather than Westminster.
★★★★★“Our guide was fantastic. The history she shared, the stories, and lore made the Tower of London come to life for us . It was much more meaningful with our guide. Highly recommend to see the crown jewels without crowds and getting to meet and hear about a beefeaters life inside the tower .”
— Verified traveller
What's included
- VIP early-access tickets to Tower of London
- Local English-speaking guide
- Thames River Boat Ride
- A guided walking tour of Royal Westminster
Where you'll go: Tower of London · The Crown Jewels · Thames River · Houses of Parliament
What's good
- Early access to the Tower of London and Crown Jewels
- High 4.9 rating and a reasonable $146 mid-price
What to know
- Fewest reviews on the list at 153
- Parliament is a minor stop, not the focus
Best for: Visitors who care most about beating the crowds at the Tower of London
Skip it if: You specifically want a Parliament- and Westminster-centered tour
Before you go
- For the classic postcard shot of Big Ben and Parliament, cross to Westminster Bridge or the South Bank — several of these tours pause there, and the light is best in late afternoon.
- The $26 walking tour covers the most ground per pound; book it first and add an indoor site like the Churchill War Rooms separately.
- Black Cab tours include hotel pick-up — confirm your accommodation is inside their pick-up zone when you book to avoid a meeting-point surprise.
- The Thames speedboat is fast and exposed; bring a jacket and secure your phone, as the Parliament-from-the-water views come at speed.
- Parliament sits right by Westminster Abbey, St James's Park and Buckingham Palace — most tours here chain them together, so a half-day covers the whole Westminster cluster on foot.
- If actually going inside Parliament matters to you, book the official UK Parliament tour directly for a Saturday — none of the Viator products here include interior access.
How I ranked these
For Houses of Parliament tours I weighted three things: what you actually get for the money (group size, what's included, special access), the rating balanced against how many reviews back it up — a 4.9 from 200 people isn't the same as a 4.6 from 15,000 — and price for what's on offer. Ratings, review counts and prices shift over time, so always check the live booking page before you pay.
Good to know
Do any of these tours actually go inside the Houses of Parliament?
No. The tours here — the walking tour, the Black Cab tours, the Thames speedboat — pass the Palace of Westminster and stop for photos of Big Ben and the river frontage, but none include an interior visit. Going inside means booking a separate official UK Parliament tour (typically Saturdays and recess periods), which these products don't cover.
What's the best way to see Big Ben and Parliament without spending much?
The London Sightseeing Walking Tour at around $26 is the cheapest way here — it covers 30+ sights including Big Ben, Westminster and Buckingham Palace on foot. The High-Speed Thames Speedboat (about $97) gives you Parliament and Big Ben from the water, which is a genuinely different angle and good for photos.
Are the Black Cab tours worth the much higher price?
They run $307–$441 because they're fully private, with hotel pick-up and a licensed cabbie guide who can drop you at each landmark. If you're a small group splitting the cost, want to stay dry and cover a lot of ground in 2 hours, they make sense. Solo or on a budget, the walking tour hits many of the same sights.
Can I combine seeing Parliament with a proper indoor attraction?
Yes — the London in WW2 Walking Tour ($100) includes a visit to the Churchill War Rooms, and the Tower of London Early Access tour ($146) gets you into the Tower before crowds for the Crown Jewels and Opening Ceremony. Both pass Parliament and give you a substantial indoor site as well.
Is Big Ben's tower still covered in scaffolding?
No. The Elizabeth Tower's multi-year restoration finished and the clock and bells are back in full view, so photos from the walking tour, the speedboat, or Westminster Bridge show the tower clearly. It's worth confirming your tour's stop still includes a Westminster Bridge or riverside photo point.
Prices are "from" prices in USD and change with date and availability. Last updated August 2026.