Tom took on a new corporate role with Daystar Ltd and moved in June 2022 to London. He entered into a lease of a flat in the City for three years. The landlord, Logan, reserved a right of re-entry for breach of any of the tenant's covenants. The lease contained the following covenants: (i) to pay the rent of 25,000 a year quarterly on 1st July; October; January and April. (ii) not to alter the premises; (iii) not to assign, sub-let or part with possession without the consent of the landlord which would not be unreasonably withheld; (iv) not to use the premises for illegal purposes. In September 2022 Tom decided that he wanted to move to Brighton on the south coast, and he assigned the lease with the landlord's consent to his brother- in-law Roman. In December 2022 Logan sold the reversion to his daughter Shiv. In January 2023, Roman decided that he wanted to knock down an internal wall to make more of an open space and carried out the alteration. He also holds wild parties in his flat most evenings, where Class A drugs are openly sold to partygoers by visiting dealers. In February 2023, Roman had a serious argument with Shiv, and has not paid the rent due since then. Roman also decided that it would be a good idea to increase his income by sub-letting the spare bedroom to his cousin Greg but did not seek the landlord's consent. Advise Shiv what remedies are available to her follow the following answer plan:

1. start with identifying the 4 covenants, talk on the law of each of the 4 covenants

2. talk about all the breaches that happened

3.deal with the remedies available for shiv

the law should be based on uk land law

while answering provide with relevant case laws and legislations