The term practicable appears in:

EPA S89(1)   “It shall be the duty of … (b)the Secretary of State, as respects any trunk road which is a special road and any relevant highway or relevant road for which he is responsible … to ensure that the land is, so far as is practicable, kept clear of litter and refuse“.

and in DEFRA’s  Litter Code of Practice Table 1 page 20 referring to special circumstances zones the last resort response times are given as  ”28 days or as soon as practicable“

The term simply means “physically possible” without the need to take account of cost, time and trouble as opposed to “reasonably practicable” were these considerations would come into play.

This definition was set out by the Court of Appeal (in its judgment in Edwards v. National Coal Board, [1949] 1 All ER 743) as follows:

“‘Reasonably practicable’ is a narrower term than ‘physically possible’ … a computation must be made by the owner in which the quantum of risk is placed on one scale and the sacrifice involved in the measures necessary for averting the risk (whether in money, time or trouble) is placed in the other, and that, if it be shown that there is a gross disproportion between them – the risk being insignificant in relation to the sacrifice – the defendants discharge the onus on them.”