Black Diamond has put together a range of useful web links to help assist you.
- Corporation Tax - Visit Site
- COP14 Corporation Tax Self-Assessment enquiries.
- Companies House - Visit Site
- Very useful company information site.
- IR35 Definition - Visit Site
- For a definition of IR35.
- HMRC - Visit Site
- The HMRC resource site for tax information & queries.
- National Insurance Rates - Visit Site
- For a list of current national insurance rates.
- Local Business Link - Visit Site
- All sorts of help and advice for businesses.
- Bytestart - Visit Site
- The small business portal.
- Contractor UK - Visit Site
- The UK's most popular site for IT contractors.
- Professional Contractors Group - Visit Site
- The Professional Contractors Group, giving a voice to those who choose to work for themselves.
- ATSCo - Visit Site
- The Association of Technology Staffing Companies offer a range of advice and expertise.

