Done it by myself too. Had 20k deposit and 11k to do it up. Earned around £45k a couple years ago and bought for £175k so loaned £155k from the bank. I think they were going to lend me up to £200k but I didn’t want to be stretched financially and feel like I was living to work.
Don’t forget your stamp duty & solicitor fees (can’t remember how much now as first flat fell through which I had to also pay solicitor for) £544 repayments a month on repayment mortgage - not interest only
flat last valued at £215k last year
I mostly did online mortgage calculators and Nationwide was best for me, don’t know
If it helped I have had an account with them since I was about 5