Mine was up for renewal in April. I tried to get a better deal somewhere else but because my accounts werent showing I was earning over £30,000 Im got turned down. So stayed with the one I had before on a variable rate which was £30 cheaper per month than before because of low interest rate.
Unless you have around £25,000 deposit you wont stand much chance these days.
i can put a 35% deposit down on the property i have in mind
Why not visit your bank where your business account is held. Obviously they can see at a glance what your income is and has been and "may" just accept that rather than 3 years certified accounts. Most banks are really competitive with mortgage rates now. It is a good starting point to see what you can get and for comparison to other lenders. (Sometimes if you are cheeky enough and have a good realtionship with your bank you can even trim some off the rate
)
Self employed are usually judged on nett income (after all expenses) not gross income as it is for employed. Once you have an answer and rate and monthly repayment cost from your bank, shop around and see if it can be bettered. Remember the best mortgage for you may not always be the cheapest. watch out for penalty clauses if repaying early, watch our for charges if you get a lower than normal rate, just do your sums before signing anything.
My only advise is that in my opinion the rates have been low for quite some time now and if we don't start crawling out of this economic mess soon, the only option the government may have left is to raise interest rates. If you can get a 3 or 5 year fixed rate for around 4.5% go for it. May be a little more costly than some at the moment, but who knows where the rates may be in a years time.