(1)Where it appears to a [F6 local authorityF6] that [F491 another local authority, [[F492,F493 NHS EnglandF493] , [F494 an integrated care boardF494] orF492] a Local Health Board F495...F491] could, by taking any specified action, help in the exercise of any of their functions under this Part, they may request the help of [F496 that bodyF496] , specifying the action in question.
(2)[F497 A bodyF497] whose help is so requested shall comply with the request unless—
(a)they consider that the help requested is not necessary for the purpose of the exercise [F498 of those functions by the local authority that made the requestF498] , or
(b)subsection (3) applies.
(3)This subsection applies—
(a)in [F499 a case where the request is madeF499] of [[F500,F493 NHS EnglandF493] , [F501 an integrated care boardF501] orF500] a [F502 Local Health BoardF502] F503 ..., if [F504 that bodyF504] consider that, having regard to the resources available to them for the purpose of the exercise of their functions under the M4[F505 National Health Service Act 2006 or the National Health Service (Wales) Act 2006F505] , it is not reasonable for them to comply with the request, or
(b)in [F499 a case where the request is madeF499] of a local authority, if that authority consider that the request is not compatible with their own statutory or other duties and obligations or unduly prejudices the discharge of any of their functions.
(4)Regulations may provide that, where [F506 a local authority, [F493 NHS EnglandF493] , [F507 an integrated care boardF507] or a Local Health BoardF506] F508 ... are under a duty by virtue of subsection (2) to comply with a request to help a [F6 local authorityF6] in the making of an assessment under section 323 or a statement under section 324 of this Act, they must, subject to prescribed exceptions, comply with the request within the prescribed period.
F509(5). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .