Home insurance within the UK? how does it work?

I am a tenant in an appartment in London beside my boyfriend. I'd like to know if I need to acquire a home insurance for this appartment and what king of insurance (building or content?). I mean, if there is a fire, a skylight broken or a inundation problem, do we have to pay for it or is it the proprietor? Idem in case of burglary?
Finally where on earth are the best place to get it? I tried to get some quote from diverse companies (HSBC, Tesco Insurance...) but the price be crazy: around lb250 per year. Is that always that expensive in the UK? (I used to live within Paris and it was less that lb40 a year for a complete cover insurance).

Many gratefulness
Answers:
You will require home contents insurance as you do not own your building and therefore have no insurable interest surrounded by it. Typically this comes with liability as an occupier and personal liability towards others for members of your household, money and cover for lasting possession outside the home. The cover can be "standard" fire flood, water damage, vandalism burglary / burglary etc and then "Accidental Damage cover. Many policies include this accidental sabotage on certain items such as TVs computes etc in the standard collection. In addition you will have some form of cover for alternative semi-detached should your home become unoccupiable due to insured peril.
The premium is calculate by applying a rate to the sum insured. Eg lb30,000 contents are charged at lbx premium per lb1000 contents. This rate is based on the postcode of the flat. Central London is expensive.
I hope this assists.

xxR


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