Accounting convention
The accounts have been prepared in accordance with the Companies Act 1985, as amended and with all applicable financial reporting and accounting standards under the historical cost convention modified to include the revaluation of certain properties.

FRS18 – Accounting Policies and applicable sections of FRS17 – Retirement Benefits were adopted during the year to 31 July 2001.

Basis of consolidation
The consolidated financial statements have been prepared under merger accounting principles to include the parent company and subsidiary undertakings of both Smiths Group plc and TI Group plc.

The results of subsidiaries acquired during the year are consolidated from the date of acquisition.

Up to 1 August 1998, goodwill arising on consolidation, representing the difference between the cost of acquisition of a subsidiary undertaking and the fair value of its net assets at the date of acquisition, was charged to reserves in the year of acquisition. Goodwill impairment on prospective disposals is recognised through the Profit and Loss Account.

Following the implementation of FRS10 – Goodwill and Intangible Assets, goodwill arising from acquisitions after 1 August 1998 is capitalised at cost, and amortised on a straight-line basis over an estimated useful economic life of up to 20 years.

Turnover
Turnover represents the invoiced amount of goods sold and services provided during the year, after the deduction of trade discounts and sales related taxes, and the value of work undertaken during the year on long-term contracts.

Research and development
Expenditure, other than that recoverable from third parties, is written off in the year in which it is incurred.

Fixed assets
Depreciation is provided at rates estimated to write off the relevant assets by equal annual amounts over their expected useful lives. In general, the rates used are: Freehold and long leasehold buildings – 2%, Short leasehold property – over the period of the lease, Plant, machinery etc. – 10% to 20%, Motor vehicles – 25%, Tools and other equipment – 10% to 33%.

Fixed assets held under finance leases are capitalised and depreciated in accordance with the company's depreciation policy. The capital element of future lease payments is included in creditors.

Payments made under operating leases are charged to the profit and loss account as incurred over the term of the lease.

Freehold properties
These financial statements include certain properties at 1974 valuation, less depreciation on the enhanced values calculated in accordance with the policy set out above. The directors have decided to invoke the transitional provisions of FRS15 – Tangible Fixed Assets, and do not intend to revalue these properties every year.

Leased properties
Where a leasehold property is vacant, or sub-let under terms such that the rental income is insufficient to meet all outgoings, provision is made for the anticipated future shortfall up to termination of the lease.

Stocks
Stocks and work in progress are valued at cost, including related production overheads, reduced to estimated net realisable value where appropriate. Profit is taken on long-term contracts by reference to the work completed. Provision for losses is made as soon as they are recognised.

Financial instruments
Financial assets are recognised in the balance sheet at the lower of cost and net realisable value. Discounts, premia and related costs of issue are charged or credited to the profit and loss account over the life of the asset or liability to which they relate.
The company uses derivative financial instruments to hedge its exposure to fluctuations in interest rates and foreign exchange rates.

Receipts and payments on interest rate instruments are recognised on an accruals basis over the life of the instrument.

Foreign currency assets and liabilities covered by forward contracts are translated at the contract rates of exchange. Other assets and liabilities in foreign currencies are translated at closing rates.

Foreign currencies
The profit and loss accounts of overseas subsidiaries are translated into sterling at average rates of exchange for the year.

Exchange adjustments arising from the retranslation of opening net assets in overseas subsidiaries and their results for the year at closing rates, and the translation of foreign currency borrowings to match overseas investments, are taken to the statement of total recognised gains and losses. All other exchange gains and losses are taken to the profit and loss account.

Taxation
Deferred tax is recognised in respect of timing differences that have originated but not reversed as at the balance sheet date, to the extent that it is considered probable that a liability or asset will crystallise in the foreseeable future. Timing differences are differences between the group's taxable profits and its results as stated in the financial statements that arise from the inclusion of gains and losses in tax assessments in periods different from those in which they are recognised in the financial statements.

Deferred tax is recognised in respect of the retained earnings of overseas subsidiaries and associates only to the extent that, at the balance sheet date, dividends have been declared or an obligation is present to distribute past earnings. Deferred tax is not recognised on any fixed assets that have been revalued unless there is a binding agreement to sell the asset.

Deferred tax is measured at the average tax rates that are expected to apply in the periods in which the timing differences are expected to reverse, based on tax rates and laws that have been enacted or substantially enacted by the balance sheet date.

Post retirement benefits
The cost of providing pensions and post retirement healthcare for employees is charged in the profit and loss account over the working life of the employees taking into account the recommendation of qualified actuaries. Any funding surpluses or deficits that arise are amortised over the average working life of employees.