Police said a car struck and killed the cyclists - a man and a woman - before the driver fled the scene of the crash in Bristol.
Crowds flocked to Bristol this weekend for the See No Evil festival - a showcase of work by more than 40 graffiti artists.
The sky above Bristol was filled with hot air balloons this morning ahead of the Bristol International Balloon Fiesta
Nicholas Lovell will be sentenced on the 22 May for causing the deaths of Ross and Clare Simons by dangerous driving after he collided with their tandem bike near Bristol in January.
Mr Lovell's partner Louise Cox has pleaded guilty to perverting the course of justice and will also be sentenced next month.
On Sunday January 27 of this year, Clare and Ross Simons needlessly lost their lives following a fatal collision on Hanham High Street.
This collision was caused by Nicholas Lovell, a disqualified driver who got behind the wheel of the car and drove at speed, before losing control and striking the couple while they cycled.
– Detective Chief Inspector Rachel Williams of Avon and Somerset Police
Nicholas Lovell then ran away from the scene in a bid to escape, leaving behind Louise Cox who then deliberately and callously set out to mislead police at the scene.
The pleas entered today by both Nicholas Lovell and Louise Cox reflect that both have taken some responsibility for the deaths of Ross and Clare. While these pleas will never bring Ross and Clare back, I hope they go some way to providing comfort for their families.
Ross and Clare Simons had been married for about 18-months when they were killed after a man knocked them off their tandem bike in January in Bristol.
Nicholas Lovell, 38, will be sentenced in four weeks after pleading guilty to causing the deaths by dangerous driving of the couple.
Mr Lovell's partner Louise Cox has pleaded guilty to perverting the course of justice.
Nicholas Lovell and Louise Cox will both be sentence within four weeks.
The public gallery was packed with the victims' family and friends as well as supporters of the pair who entered guilty pleas.
Nicholas Lovell has pleaded guilty to the death by dangerous driving of husband and wife Ross and Clare Simons who were killed when they were knocked off their tandem bicycle in a hit and run in Hanham near Bristol in January.
His partner Louise Cox has pleaded guilty to perverting the course of justice.
Bristol city centre is to close to traffic on selected Sundays, Mayor George Ferguson will announce today. The Making Sundays Special scheme will start on the twenty third of June and ban traffic from the streets to encourage community groups and street performers.
Initially, once a month over the summer, the scheme is expected to become weekly. It could also be extended to include more streets if successful and folows the example of Bristol's twin French city, Bordeaux.
Mr Ferguson tweeted about about in incident yesterday. He said he had been "roughed up" but it was '"all in a day's work".
A health expert will warn the routine screening of all elderly patients for dementia would be a "disaster".
Dr Chris Fox, from the University of East Anglia's medical school, said the stigma and anxiety caused by being diagnosed with early dementia, before symptoms are apparent, greatly outweigh any benefits.
He added that fear is bolstered by the fact that there is not a prospect of a breakthrough in treatment on the horizon.
Speaking at the TEDMEDLive healthcare conference in Bristol later today, he will say the risk of misdiagnosis is too high.
Watch mobile phone footage of last night's disturbances in the Easton area of Bristol here:
200 people had gathered in Chelsea Road to celebrate the death of Baroness Thatcher.
Bottles and cans were thrown at officers, six of whom suffered injuries. One remains in hospital.
A police vehicle was damaged and one person was arrested for violent disorder.
Six police officers were injured during disturbances in Bristol to mark the death of Baroness Thatcher.
Police were called to Chelsea Road in Easton at 12.30am after reports of a street party with up to 200 people in attendance.
Six officers were injured - one seriously - after they were pelted with bottles and cans. A police vehicle was also damaged.
One person was arrested.