asked the Secretary of State for the Home Department how many persons have been employed, whole time or part time, by the immigration service in each of the past five years and at what grades; how many other persons are employed, wholly or mainly, on work connected with immigration in the United Kingdom and abroad; what is the current cost of, and where appropriate what was the cost in each of the last five years of (a) the immigration service, (b) the immigration service intelligence unit, (c) the staffing and maintenance of Harmondsworth detention centre, (d) the immigration appeals system, (e) the employment of outside agencies on immigration work and (f) the operation of the entry

£000
	1977–78	1978–79	1979–80	1980–81	1981–82	1982–83
Home Office staff costs	14,875	16,997	20,086	25,326	28,558	30,906
General administrative expenses	2,335	2,613	3,583	4,407	5,049	6,872
Receipts*	-682	-1,018	-1,299	-1,777	-2,721	-7,976
TOTAL	16,528	18,592	22,370	27,956	30,886	29,802
* Nationality fees, fees for documents of identity, payments by carriers etc.

These figures are based on the outturn up to 1980–81, estimated outturn for 1981–82 and the estimate for 1982–83. They do not include accommodation costs which are provided as an allied service, computer costs or

The numbers and grades of staff employed in the immigration service on 1 April in each of the last five years are as follows:

	1 April
	1978	1979	1980	1981	1982
Chief inspector	1	1	1	1	1
Deputy chief inspector	2	2	2	2	2
Assistant chief inspector	9	9	9	9	8
Inspector	33	35	35	35	33
Chief immigration officer	190	195	201	210	209
Immigration officer	1,140	1,181	1,221	1,251	1,238
Interpreter	6	7	8	7	8
H.E.O.	2	2	2	2	2
E.O.	8	7	9	9	9
C.O.	40½	42½	44½	46	42½
C.A.	39	44½	40	47	45
Personal secretary	3	3	3	4	3
Typist	25	28	28	26	27½
Paperkeeper	2	1	1	1	1
Messenger	9	10	10	10	11
Telephonist	1	1	1	1	1
Cleaner	7	8½	7½	8	7½
Total	1,517½	1,577½	1,623	1,669	1,648½

Casual staff are also employed in the summer months primarily to assist with the embarkation control.In addition, 1,093½ staff are currently employed in the Immigration and Nationality Department, and 93 United Kingdom-based staff are employed in the Foreign and Commonwealth Office on immigration work. This excludes the 224½ staff currently imployed in the Nationality Division of the Home Office and staff locally engaged by the Foreign and Commonwealth Office. '[he immigration appellate authorities consist of the tribunal, the adjudicators and supporting staff. The tribunal comprises three full-time and 26 part-time members. There are 15 full-time and 62 part-time adjudicators and 78 full-time and 16 part-time members of staff.Costs for particular elements of the immigration control are not held centrally and could not be identified without disproportionate expense. The following table, however shows estimated staff costs, general administrative expenses and receipts for the Immigration and Nationality Department (including the Nationality Division) and the Immigration Service for 1977–78 to 1982–83.expenditure incurred by, for example, police forces, the courts and the prison service in connection with the enforcement of the Immigration Act 1971.