i just got a morgage with 4 years of records.
my 4th year is 50% better than year 3 so some banks would only go by year 3 cos they thought year 4 was a blip.
the BS i have mortgage with went by years 4.
you usualy do need a lot to put down for a deposite.
you usually need an accountant for help. if you have a van on lease and its affecting your credit rating get your accountant to verify your profits are found after the van is paid for. that way they can see that the van lease on you credit rating counts for nothing. doing this added loads on to what i was allowed.
i found it difficult to get as im the only earner in the house, as the misses is ill, but luckilly she had big load of inerrintence