Yes
No, its not. Don't be so silly!
In Australia, a marriage performed in another country is seen as legal if the marriage is legally recognised in the country in which the marriage was performed and if the marriage would have been recognised as legally valid if it had of taken place in Australia.
Yes It is
There are two types of marriages in Nigeria: Marriage under the Act and Marriage under the native law and custom. Proxy marriage is not permitted under the Marriage Act in Nigeria (marriage performed at the registry and Churches). Both party needs to be present. However, proxy marriage under the native law and custom is lawful and recognised in Nigeria, hence should be recognised in UK: marriage is a contract between two consenting adults. Once the contract is recognised by the law of the country where it was made, it is recognised and enforceable in any other country.
Romania
Yes
yes
No, it is not legal.
Romania is two hours ahead of England.
Yes
Yes, marriages from all faiths are recognised in the UK as long as they are conducted in accordance with the law.
Romania is about 1.83 times bigger than England. So England could only fit in one complete time.