Under the Sea Bounce & Slide Bouncy Castle Hire
£140 hire
Bexleyheath • Bexley • Welling • Sidcup • Dartford & surrounding areas
Make a splash at your next children's party with our Under The Sea Bounce & Slide Castle. Measuring 12ft x 18ft, this colourful ocean-themed inflatable combines a spacious bouncing area with an exciting built-in front slide and can accommodate approximately 6–8 children at a time, depending on their size.
Suitable for children up to 11 years old, this castle is particularly popular with younger children and is ideal for birthday parties, nursery and primary school events, family celebrations and garden parties.
Available for indoor and outdoor hire across Blackfen, Swanley, Dartford, Hextable, Bexleyheath, Welling, Crayford, Stone, Bexley, Greenhithe and surrounding areas.
🏰 Under the Sea Bounce & Slide Castle
Information
Minimum clear height
Approximately 11ft
Required space
14ft × 25ft
Required access width
2.5ft
Suitable age
Children up to 11 years
Will the Under the Sea Bounce & Slide Inflatable Fit In My Garden or Hall?
📏 Please measure before booking
You need 14ft x 25ft of clear space — not just 12ft x 18ft
The Under the Sea Bounce & Slide bouncy castle itself measures 12ft × 18ft, but you'll need a larger area to allow enough room for safe setup.
You need at least 14ft x 25ft of clear space
This includes the space needed for the inflatable, blower and safety mats.
For indoor hire, you'll also need a minimum clear height of 11ft
It's important to measure the available setup area, rather than just the size of the castle itself.
🚪 What about access?
We need at least 2.5ft of clear, flat and level access from our vehicle to the setup area.
This could be through a side gate, back gate, pathway or suitable entrance into a hall.
Not sure if it will fit? Send us a photo of your garden, hall or access route and we'll be happy to advise before you book.
contact us
📞 07790 742 804
Why Children Love the Under the Sea Bounce & Slide
🐠
Underwater adventure
Bright and colorful underwater artwork featuring friendly sea creatures created a fun ocean-themed setting for children’s parties.
🛝
Bounce, Play & Slide
The spacious bouncing area gives children plenty of room to jump, play and enjoy the castle with friends, while built-in front slide adds an extra burst of fun. Children can bounce and play before climbing up the padded steps and sliding down for even more excitement.
🎈
Great for indoor parties
At approximately 11ft high, this castle is suitable for many halls, community centers and other indoor venues, subject to the venue’s available space and ceiling height.
🌦️
Shower cover included
A fitted shower cover is included for suitable outdoor hires and helps protect the castle from light showers and creates shade.
Photos and Video of the Under the Sea Bounce & Slide
Take a closer look at the Under the Sea Bounce & Slide before booking. Browse the photos and video to see the design, size and layout of the inflatable, including the bouncing area and built-in slide.
Here’s a closer look at the Under The Sea Bounce & Slide, including its colourful underwater design, spacious bouncing area and built-in front slide.
Customer Review
★★★★★
“Superb! I have used Caroline and her team a number of times. They’re so professional and always deliver and collect on time and efficiently”
— Sarah from Chislehurst
Read this review on Google→
What's included in your hire?
✓
Delivery
✓
Professional setup
✓
Full safety check
✓
Collection after your hire
✓
Electric blower
✓
Extension lead up to 45m
✓
Safety mat
✓
Groundsheet where required
For outdoor hires, the castle is securely pegged into suitable grass.
For indoor hall bookings, we use suitable sandbags and protective mats where required, with no extra charge
📋Before We Arrive - What We Need From You
A little preparation before we arrive makes everything much easier on the day.
📏 Space
Please provide 14ft x 25ft of clear, reasonably level space, a slight gradient is usually fine.
🚪Access
We need at least 2.5ft wide, flat side or back access and a clear route for our trolley.
⚡Electricity
We'll need a standard 13A socket within 45m of where the castle will be set up.
🌱Ground
Grass is ideal for outdoor setup.
Unfortunately, we cannot set up on gravel or areas containing sharp stones, as these can damage the inflatable.
🐕 Garden
If you're having the castle in your garden, please remove any dog mess and move garden furniture, bins, low hanging branches and other obstacles before we arrive.
👨👩👧Supervision
An adult must supervise the children throughout the hire.
💷 Payment
Payment in cash on the morning of your hire please.
Indoor & Outdoor Under the Sea Bounce & Slide Bouncy Castle Hire
Our Under the Sea Bounce & Slide Bouncy Castle is available for garden parties and suitable indoor venues, subject to space, access, ceiling height and venue requirements.
🌳Outdoor hire
Garden hires are available from mid-March to the end of September, subject to weather and ground conditions.
What happens if the weather isn't suitable?
Outdoor hires are subject to suitable weather and ground conditions. We offer free weather cancellation up to the day before your booking for home garden parties. If you're unsure about the forecast, just get in touch and we'll be happy to advise.
🏰Indoor hire
Suitable for halls, community centres and other indoor venues throughout the year. Please check the venue's available space, ceiling height and access before booking.
Looking for a local children's party hall?
Take a look at our local halls to hire to help you find a suitable venue
Not sure if your venue or garden is suitable? Send us a photo and we'll be happy to advise before you book.
Under the Sea Bounce & Slide Bouncy Castle set up indoors at a children's party in South borough lane Baptist Church, Petts Wood.
Under the Sea Bounce & Slide Bouncy Castle Hire in Your Area
We regularly hire the Under The Sea Bounce & Slide across:
and surrounding areas
Not sure if we deliver to your town?
Please check our
delivery area
page.
Why Book with Caroline's Castles?
We're a family-run bouncy castle hire business providing professional,
reliable party entertainment across South East London and Kent.
✓ 20+ years' experience
✓ Family-run business
✓ £5 million public liability insurance
✓ Member of BIHA & TIPE
✓ Professional delivery and setup
✓ Safety checked before every hire
✓ Delivery, setup and collection included
Planning a Bigger Party?
If you're hiring a hall for your children's party, why not add a few extra activities to keep everyone entertained?
Our Didi Cars are a great addition for younger children, giving them another fun activity to enjoy alongside the Under The Sea Bounce & Slide. They work particularly well for mixed-age parties where some children may be too small for the larger inflatable activities.
You can also combine the Under The Sea Bounce & Slide with our Seaworld Theme Bouncy Castle for larger parties, school events or mixed-age groups.
Book the Under the Sea Bounce & Slide Castle
Ready to make a splash at your next party?
If you're planning a children's birthday party or family celebration and want a fun, colourful under-the-sea themed bouncy castle with a built-in slide, the Under The Sea Bounce & Slide Castle is a great choice.
Check your space, check availability and use the Book Online button to secure your date.
Booking is easy
1. Check availability
Choose your date online.
2. Book your castle
Enter your details and secure your booking.
3. We do the rest
We deliver, set up and collect.
CHECK AVAILABILITY & BOOK
📞 Call us:
07790 742804
📧 Email: carolinescastles@hotmail.co.uk
Or visit our
contact us
page and we'll get back to you as soon as possible.