Search for your company here - http://wck2.companieshouse.gov.uk - then click the link "Monitor this company".
Create a bookmark - http:// data.companieshouse.gov.uk/doc/company/NNNNNNNN (where NNNNNNNN is the co. number)
Login to the HMRC gateway, there you can check VAT, PAYE, CT and monies owed, even if your accountant is managing this for you.