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!
Go on a murder mystery night
Put up photographs of the person whos birthday it is around the room
Hire a stripper
Go clubbing at your local night club or in the city
Have a beach party with a bbq, music and maybe some cheeky volleyball
Have a casino themed night
Get a polaroid or disposable camera for everyone to snap photos with.
Have a neon themed party
Use twinkle lights to decorate meal area
Rent a beach house with friends
Write a list of 18 things to do for your 18th
Have a this is your life so far party
Have a cocktail party
Find a rave or weekender to go to
Have a karaoke party
Have a pool party
Play adult pass the parcel - Put rude/joke gifts inside
Go to a strip club
Have a garden party
Invite 18 guests/friends
Have a Shisha pipe party
Have a few large tubs of retro pic 'n' mix for people to nibble at
Go to or host a roller skating disco
Hire a limo to take you and your friends to your destination
Have a disco or a live band
Rent a bouncy castle and/or some sumo suits
Have a prom party with a posh dinner and dance
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
Go shopping for the day with your close girlfriends!
Have a Luau (Hawaiian themed) party
90's themed party, for those born in the 90's!
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
Have people write you letters on 18 things they advise you to do or not to do
Throw a party where everybody is wearing black and the birthday person is wearing colour
Get a team together and go to your nearest Laser Tag venue
Get a local takeway meal delivered
Have a quiet night in with the other half
Do a childish party e.g party rings jelly and ice cream to remind them of their childhood
Get a Domino's Pizza, Pizza Hut Express or another local Pizza takeaway
Have an adult game of pass the parcel - wrap up something novelty and hilarious
Have a specific themed party and give everyone a character to dress as on their invitation
Play adult spin the bottle
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
Have an arabian themed party!
Hire a soft play centre (if anywhere will let you!)
Toast with a glass of personalised champagne and have a bowl of strawberries with cream for people to help themselves to.
Hire a psychological magician/entertainer to wow the party guests
Hire a leisure centre swimming pool (if you find one that allows this)
Hire an ice cream van to attend the party venue
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.
Play strip poker
Enjoy looking at all the baby/child photos with friends and family
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!
Organise a picnic in a special or relaxing environment with close family and/or friends
Go bowling and don't stop until you get 18 strikes!
Have a quiet gathering to celebrate
Have a marvel theme party
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.
Play darts till you get 18 bullseyes (or pass out - whichever comes first!)
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
Have an Indian themed ball
Garden party with a marquee maybe (smart dressed)
Put up a 60's themed party
Have a custom ice sculpture luge made with alcohol running from it that people can help themselves to