Have I missed something???
£12,000 a year salary and a £100,000 mortgage....you jest, I hope ! My £37,000 mortgage was costing me £290 a month, so you must be looking at £600 for yours at least, thats more than half your salary.
I'm sure the brokers here will tell you you will only be able to get a £36,000 to £48,000 mortgage if your lucky, so you must have other income or your living way beyond your means and you wont stand a chance of moving up to a £425K property.
Bill McCallum
mccallum_bill at hotmail.com