Book keeper / accountant

I need to update my accounts to prepare my year end taxes. I would like to do it together with someone who can come to my home, and we do it together. I have all the receipts filed, but need help entering them into a sophisticated excel spreadsheet that can corrupt itself quite easily, so you being advanced with excel is important. I also need some help reconciling some details. I like to be present (and help), as I like to be sure I keep an oversight. I am based in central London (SW).