Giving an update to MPs, Sir Alan said five people had died in the British Virgin Islands and four in Anguilla.
But Defence Secretary Michael Fallon insisted the United Kingdom had responded "very quickly", with one ship helping in Anguilla since Thursday. Half the population is now homeless, he told the BBC.
So why did the storm make the islands turn brown?
"The region needs a "Disaster Recovery Marshall Plan" for the BVI and other territories that will aid in recovery, sustainable reconstruction and long-term revitalisation of the local economy", Branson wrote on his blog, referencing the Marshall Plan that was enacted to help European nations recover after World War II.
On Monday, Mr Johnson said further support would soon be made available on top of the £32m already pledged to the relief fund.
Widespread damage was caused to the Turks and Caicos Islands, but the full extent of it is still unclear.
Britain has sent more than 700 troops and 50 police officers to the British Virgin Islands after Irma swept through last week.
"The military presence is really ratcheting up now".
Caribbean relief funding increased after response to hurricane criticised
But with an aerial photograph, NASA captured another indication of the storm's devastation - it changed the color of some Caribbean islands.
But Josephine Gumbs-Connor, a lawyer in Anguilla, said she was "very disappointed" with the United Kingdom government.
She also pointed out that the sum pledged to Anguilla was insufficient to restore the island's damaged hotels and rebuild its tourism industry, and fix its hospitals, schools and the island's port.
"The prison was breached, over 100 very serious prisoners escaped".
Over 100 high-risk prisoners escaped in the British Virgin Islands during Hurricane Irma, a British junior minister said on Tuesday, as he raised the death toll in British territories to nine.
Foreign Secretary Boris Johnson has travelled to the region to see the impact of the most powerful storm ever recorded in the Atlantic Ocean, and said the extra money was needed "massively".
In some islands, including Barbuda, 90 percent of buildings were reported to be destroyed or damaged, according to Business Insider. Thousands more shelter kits and buckets are on the way from United Kingdom shortly.
Customs agents charged in 'rape table' hazing
The second victim struggled, but could not break free until released by Catota, Papagni, and Perez, authorities said. This is where the three men committed what is described as a homosexual act of gang rape against the other officer.
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