General requirements on these matters are set out in planning policy documents issued by Government and by individual local planning authorities. Planning authorities should, in working out where within their areas development should go, discuss with infrastructure providers what standards are needed. This should mean that when plans are adopted they are fully deliverable not only in terms of housing development but also in terms of the supporting infrastructure.
For particular developments the requirements are likely to be arrived at by a process of negotiation, taking account of the particular circumstances. A prospective developer may find it helpful to have pre-application discussions with the local planning authority and to consult the relevant statutory undertakers.