yes it is possible
No.
== }���tcan a illegal immigrant marry a UK citizen in the UK and reside legally I've seen the answer no where so I still need to know if is possible for an illegal immigrant living in UK to marry a UK citizen in UK and reside legally?
yea u can marry
No - of course not !
No it is not!!!!!!!!!!!
One - and only one. Poligamy is illegal in the UK.
No.
Yes, according to the new law it is possible
Yes, bigomy is illegal in both the UK and the US
Yes, beginning March 29, 2014, they can marry in England and Wales, but not in Scotland or Northern Ireland.
Assuming you mean marrying in the UK - Provided they are 'lawfully present' in the UK (ie not an illegal immigrant or failed asylum-seeker), and both parties are free to marry, there is no reason why not.
In the UK and Ireland a 'marriage of convenience' as this would be called is illegal.