The financial statements are prepared under the historical cost convention and in accordance with the Financial Reporting Standard for Smaller Entities (effective January 2015).

Turnover comprises the invoiced value of goods and services supplied by the company net of trade discounts.

Tangible fixed assets are stated at cost less depreciation. Depreciation is provided at rates calculated to write off the cost of the fixed assets, less their estimated residual value, over their expected useful lives on the following bases:

Stocks and work in progress are valued at the lower of cost and net realisable value after making due allowance for obsolete and slow-moving stocks. Cost includes all direct costs and an appropriate proportion of fixed and variable overheads. Work-in-progress is reflected in the accounts on a contract by contract basis by recording turnover and related costs as contract activity progresses.