The Royal Marines Corps of Drums have smashed the existing Guinness World Record for the longest group drum roll.
The record attempt began on Wednesday evening and finished today, 64 hours later.
The drummers more than doubled the previous record, which stood at 28 hours, 19 minutes and 3 seconds.
The new record was set by 40 Royal Marines at the Tower of London. Each drummer played for 15 minutes at a time during the record attempt, drumming for a minimum of 90 minutes each.
The event was all part of a year of celebrations for the Royal Marines who mark their 350th anniversary this year.
Royal Marines will be holding their first open doors recruitment event of the year in London later today in a bid to encourage more people to become reservists.
An elite unit will host the event in London and hope to attract significant numbers of new recruits over the next three years.
Possible recruits will get the chance to find about more about the Marine way of life by meeting serving Reservists and learning about weapons, training and equipment.
The event will take place at the Royal Marines Reserve London unit in Wandsworth.
Two groups of marines set off from Downing Street this morning, on an epic fund raising speed march around the capital.
One team headed east to the Olympic Park, and the other set off west, past Buckingham Palace.
They were seen off by Prime Minister David Cameron and the Military Wives choir.
Prime Minister David Cameron will kick start the remembrance weekend when he addresses a group of Royal Marines outside 10 Downing Street.
The Marines are attempting to break a world record for the fastest speed march.
A team will head west and attempt to run a 26.5 mile course in under 4 hours 19 minutes, whilst wearing 40lbs of kit.
The route will take in some of London's most iconic landmarks including the Houses of Parliament, Piccadilly Circus, Marble Arch and Buckingham Palace.
A second team will head east to the Olympic Park- the first people to gain entry since the London 2012 Olympics.
The Marines are hoping to raise £50,000 for the Royal Marines Association:
"It's an honour to be invited by the Prime Minister to start both speed marches from
Downing Street. Its great for us to know that we have the support of Number 10 and I'm
sure it'll be special day for all involved.
The boys have trained really hard and we are totally prepared - we cant wait now, so we hope people get behind us and raise some funds."
- Barry Colarusso, Speed March Coordinator
An injured Royal Marine will be among 20 people abseiling from the roof of St Pancras station later.
They will be performing the dare devil stunt, without the support of a wall, from the centre of the vaulted roof.
They will be accompanied by a rousing performance from the Corps of Drums from the Royal Marines Band Service.
The event is in aid of the Royal Marines Charitable Trust Fund.