For what it's worth the 1863 act can be found via google [broken link removed], this is probably the relevant section
22. Company is not to place telegraphs above ground, and posts, within certain distance of dwelling houses, without the consent of the occupier, &c. Not closer than 10 yards
(2) consent is coterminous with the occupancy and
(3) ending occupancy, the occupant can require removal of the works [see also Post Office Act 1969 c.48 Sch 4, and British Telecommunications Act 1981]
(4) which the company shall carry out within one month.
(Being a UK derived law isn't unusual - much Irish law comes from the UK, they didn't throw out the law books (or the civil servants) and start from scratch in 1922).