Shield for Business

The UK's leading contractor site. 200,000 average monthly visitors.

Missing Values

The page cannot be displayed due to missing values.

There are two possible reasons for this occurring:

  1. You are a spider / search engine crawler.
  2. You have returned to the page without the full page address. See resolution below:


Some pages, particularly the calculation pages require information held in the address of the page:     E.g.

If a page is saved (perhaps bookmarked) without these values then returning to the page can cause problems because the values are missing.

Ensure that when you bookmark a page the full address of the page is used.

Now you can either:

  1. Select a new Calculator from the calculator list.
  2. Return to the home page.