Notes to the Company financial statements

4. Investments in subsidiary undertakings

	£m
At 1 April 2008 and 31 March 2009	1,022.6

The Company’s interests in principal subsidiaries at 31 March 2008 and 31 March 2009 were as follows:

Name of undertaking	Country of incorporation or registration and operation	Description of shares held	Proportion of nominal value of issued shares held by Group (%)	Business activity
Northumbrian Services Limited	England and Wales	Ordinary shares of £1	100	Holding of investments and loans
Northumbrian Water Limited	England and Wales	Ordinary shares of £1	100	Water and sewerage services
Northumbrian Water Finance plc	England and Wales	Ordinary shares of £1	100	Holding of finance instruments
Caledonian Environmental Services plc	Scotland	Ordinary shares of £1	75	Waste water services
Caledonian Environmental  Levenmouth Treatment  Services Limited	Scotland	Ordinary shares of £1	75	Waste water services
Ayr Environmental Services  Limited	Scotland	Ordinary shares of £1	75	Waste water services
Ayr Environmental Services Operations Limited	Scotland	Ordinary shares of £1	100	Waste water services
AquaGib Limited	Gibraltar	Ordinary shares of £1	67	Water and sewerage services
Northumbrian Water Projects  Limited	England and Wales	Ordinary shares of £1	100	Waste water services
SA Agrer NV	Belgium	Ordinary shares of £1	100	Aid funded project work

The directors consider that to give full particulars of all subsidiary and associated undertakings would lead to a statement of excessive length. A full list of the Company’s subsidiaries is attached to the Company’s latest annual return filed at Companies House.

5. Debtors

	31.3.2009 £m	31.3.2008 £m
Amounts owed by subsidiary undertakings	6.5	9.7
Prepayments and accrued income	0.1	0.2
Other	0.2	0.3
	6.8	10.2

Amounts owed by subsidiary undertakings include amounts receivable for the provisional surrender of tax losses amounting to £4.7 million (2008: £5.5 million).