Brexit talks are to resume on Friday as compromises over issues such as fishing rights are sought.
The "ambitious" target would see the UK cutting emissions faster than any major economy so far, the PM says.
The cut comes at a time when the industry is suffering from low passenger numbers due to the pandemic.
The money has disappeared from circulation and is unaccounted for, say MPs and auditors.
The Pfizer/BioNTech vaccines are being kept in a central hub ahead of distribution.