The difference will simply sort itself out. Post the accrual to accountancy, and post the bill to accountancy. It will look like a credit of £376. However, you will then need to enter the next period's provision for accountancy.
Just a thought, is it possible that the £1,410 included an element for your services?
No, there were other accruals which included my fee so it wasn't that. I don't like not tidying things up - as you say, there is the £376 sat there at the moment - but now that you've said it, it's obvious that it will sort itself out.