Go to a rooftop bar somewhere (Sushi Samba, Radio Rooftop Bar, Queen of Hoxton etc.)
Hire a static caravan for a weekend with a private hot tub on it with some friends, family or your partner
Visit the 5D world experience in Piccadilly, London and watch an amazing 5d film
Meet and Greet with a celebrity
Go Glamping (Luxurious camping)
Go on a day trip to somewhere in Europe
Do a once in a life time thing (something you'll never forget) think big and go wild!
Get twisted at Fabric, London
Have a vintage tea party
Plant a tree to remember your brithday
Check what today's deal for London is
Have your own french Marie Antoinette high tea with costumes and great food!
Have your own tea party. Make scones, sandwiches and homemade jam!
Go to chuch
Visit a strip club
Go on an all day bender with your mates
Celebrate in a local nighclub with your friends
Donate money to a cause you care about
Go to Kew Gardens
Go to Tomorrowland, Belgium (The biggest dance music festival in the world)
Go on a boat trip around london
Have a birthday bowling session with your family and friends
Go on a boat ride
Go to a Jamie Oliver restaurant
Rent a nightclub and have a party
Ride round London on a Borris Bike
Ticket to ladies day at Ascot
Book a room at an expensive luxury hotel
Fly out to Venice, Italy for a romantic birthday weekend or for a friends getaway instead ;)
Get a piercing
Go ice skating
Go roller skating
Go to a lap dance or strip club
Watch the latest movie at your local cinema
Have a game of golf against your friends
Go to a casino.
Hire a look-alike celebrity for the day
If you love football then why not go and see your favourite team play at home or away or go on a stadium tour.
Go clubbing to one of the cities iconic superclubs such as Ministry Of Sound or Pacha
Take a trip down Oxford Street to do some hardcore shopping!
Go out clubbing
Order an indian, a chinese or some sushi to eat with friends and family
Go on a road trip with family or friends
Go shopping in Oxford Street in London
Go to a see a football match
Go for a tour round London in a Red London Bus
If fishing is your thing then go for a big birthday fishing session.
Go to Harrods
Go to the Doctor Who Experience in Cardiff
Go Ice Skating
Take a trip on a London duck tour
Padi scuba diving course
Watch a 3D film at the Imax cinema in Waterloo
Visit the Natural History or Science museum
Check out the world of the odd and bizarre at Ripleys Believe it or Not!
Go on a Superbreak. You can choose an attraction to go to and get a lovely nights accommodation to go with it
Organise the local paper to feature the persons birthday and photo in the special announcements section
Go to a sushi restaurant
Go to Nandos, Zizzi, Pizza Express etc for a nice but inexpensive meal
Go to your local Gala for a game of Bingo with your friends
Go and see an IMAX film
Do voluntary work in a nursery home or a charity shop
Have a short break at Center Parcs
Host a barbecue party and invite all your friends and family