Have a house party
Have a big birthday party for family and friends
Have a UV paint party
Rent a Party Canal Boat
Have a foam party with a bouncy castle and a BBQ
Hire a Party Bus
Rent out a club for the night
Blow up 18th birthday balloons and put different tasks in each one
Host a Masquerade party
Hire a marquee to host your party
Have dinner with Family and Friends in a restaurant.
Have a bonfire with your friends if the weather is right!
Put up photographs of the person whos birthday it is around the room
Go on a murder mystery night
Hire a stripper
Have a beach party with a bbq, music and maybe some cheeky volleyball
Go clubbing at your local night club or in the city
Have a casino themed night
Get a polaroid or disposable camera for everyone to snap photos with.
Rent a beach house with friends
Use twinkle lights to decorate meal area
Have a neon themed party
Write a list of 18 things to do for your 18th
Have a karaoke party
Have a this is your life so far party
Find a rave or weekender to go to
Have a cocktail party
Play adult pass the parcel - Put rude/joke gifts inside
Have a few large tubs of retro pic 'n' mix for people to nibble at
Go to a strip club
Have a Shisha pipe party
Go to or host a roller skating disco
Have a prom party with a posh dinner and dance
Invite 18 guests/friends
Have a disco or a live band
Rent a bouncy castle and/or some sumo suits
Have a garden party
Have a pool party
Hire a limo to take you and your friends to your destination
Have a kids party with pin the tail on the donkey, musical chairs and party bags
Have a party on a boat.
Organise a treasure hunt around London
Have a Luau (Hawaiian themed) party
Have a huge sleepover
Hold a fancy dress party for your birthday party and take lots of photos!
Go to a concert with your mates
Go shopping for the day with your close girlfriends!
Have people write you letters on 18 things they advise you to do or not to do
Get a team together and go to your nearest Laser Tag venue
Get a local takeway meal delivered
Do a childish party e.g party rings jelly and ice cream to remind them of their childhood
90's themed party, for those born in the 90's!
Have a quiet night in with the other half
Have a specific themed party and give everyone a character to dress as on their invitation
Paint an old throne looking chair in gold and get everyone to take photos in it at the party
Hire the exclusive use of an ice rink for your party venue
Throw a party where everybody is wearing black and the birthday person is wearing colour
Hire a soft play centre (if anywhere will let you!)
Get a Domino's Pizza, Pizza Hut Express or another local Pizza takeaway
Toast with a glass of Champagne and have a bowl of strawberries with cream for people to help themselves to.
Play adult spin the bottle
Hire a leisure centre swimming pool (if you find one that allows this)
Hire an ice cream van to attend the party venue
Play strip poker
Enjoy looking at all the baby/child photos with friends and family
Hire a psychological magician/entertainer to wow the party guests
Have an adult game of pass the parcel - wrap up something novelty and hilarious
Have a Burlesque fancy dress party!
Have a sleepover with your friends
Put up a tent in the garden, have a sleepover in it and do americanised activities like making smore's
Eat a lot of cake... Maybe even play cake eating challenges but preferably not combined with drinking games!
Have an arabian themed party!
Have a mask party, where everyone dresses in fancy dress and wears masks
Put a small letter of things you like about the person who is 18 in a clear 18 balloon, once it deflates they can pop it and read the message.
Organise a picnic in a special or relaxing environment with close family and/or friends
Have a marvel theme party
Have a quiet gathering to celebrate
Have a hot tub party
Have a Toga party!
Make a pinata with old newspapers, flour, water and a balloon. Fill it with sweets or anything you want.
Organise a special car (eg. Porsche) to take the birthday person to their meal or party
Have a poker night with everyone dressed in suits
Go bowling and don't stop until you get 18 strikes!
Have an Indian themed ball
Put up a 60's themed party
Play darts till you get 18 bullseyes (or pass out - whichever comes first!)
Garden party with a marquee maybe (smart dressed)
Have a custom ice sculpture luge made with alcohol running from it that people can help themselves to