you should be ok with a letter from your father stating he's sponsoring your accommodation

also i would have thought he would need to supply the following also-

Accommodation (renters) If the sponsor rents a flat or house, the tenancy agreement should be provided. If the applicant is not a signatory to the tenancy agreement, then an additional statement from the landlord (or estate agent) should be provided that attests to his agreement that the premises will be occupied by an additional person. If an existing tenancy agreement is to be used, it should have at least six months before expiry. If the tenancy agreement does not have at least six months before expiry, then an additional statement from the landlord showing intent to renew at the same terms should be provided.

Accommodation (sharing a house with others and co-sponsors offering accommodation) If the sponsor and the applicant intend to live in an accommodation with multiple occupants, the information shown for renters should be provided. Additionally, the applicant and sponsor should show that they will have exclusive access to a bedroom which is not used by anyone else. A bedroom is a room which is normally used as such and kitchens, bathrooms, and utility rooms do not qualify. A bedroom can be a family room or study which has been converted for exclusive access. Finally, a bedroom must be at least 50 square feet in dimension

# Rented accommodation If the accommodation is privately rented, the sponsor should submit a letter from the landlord that confirms both the size of the property and his agreement that an additional occupant may take up residence there. The sponsor should also include a copy of the tenancy agreement, and the tenancy agreement should have at least six months remaining until its expiry.

If the accommodation is owned by a local authority or council estate, a landlord's confirmation should also be obtained, but if this cannot be obtained a report from an independent surveyor which confirms the size and suitability of the premises can be submitted instead.

# Overcrowding The test for determining whether or not an accommodation is overcrowded is given in the IDI's (Chapter 8, S1 annex F, paragragh 6.3). It takes the form of a table which is reproduced below. To use the table, add up the number of occupants according to the following scheme: occupants under the age of one count as zero; occupants between one and ten years of age count as one-half; and occupants over the age of 10 count as a whole person.

Number of rooms - Permitted number of persons
1 - 2
2 - 3
3 - 5
4 - 7.5
5 - 10

yes you will need a job, with bank statements and pay slips for the last 6 months, and hopefully a few £1,000s in the bank..