Local Government in Greater London is provided by 32 boroughs and the City of London Corporation (The 32 boroughs are statutory corporations created by the London Government Act 1963). The Common Council of the City of London is elected by some 22,213 individuals, none of whom have more than one vote. 6,632 of the voters are residents and 15,581 are either appointees of businesses (or institutions such as churches, charities and educational establishments) or they are sole traders or members of partnerships. The allocation of business voters is skewed towards small and medium sized businesses, organisations with a workforce size of 9 or less can nominate 1 voter; those with up to 50 staff can nominate 1 voter for every 5 staff; those with more than 50 can appoint 10 voters plus an additional voter for every additional 50 members of staff. All voting is by secret ballot in the normal way.
The Common Council is the police authority for the City of London, but the City of London Police are subject to the same laws and regulations as any other territorial police force in England.
The City of London Police did not give “themselves the power to seize domains”, but (as I understand it) they did send out some somewhat officious letters to domain registrars.
Caveat Emptor
The ancient Latin phrase translates as ‘let the buyer beware’ i.e. use your common sense before parting with your money - check out what sort of people you are dealing with and what their track record is etc. If you are so daft as to pay money to a domain registrar who rolls over in the face of one officious letter then you chose the wrong registrar