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Is this an AST?
Sorry, I lost my connection.
Unless you have written permission from your landlord you cannot sublet.
There would also be issues here about the house being used for multiple occupation without proper licences.
You cannot rely on the absence of a prohibition in the contract to sublet. You need positive permission to do so.
Sorry if that is bad news.
Can I clarify anything for you?
Yes, I'm in the Uk and only deal with England and Wales.