Rule 60 Special mode of service

it is made to appear to a district judge (magistrates’ court) or clerk of petty sessions that a process cannot be served because the defendant is evading service or admission cannot be gained to his residence or business premises or it is not reasonably practicable to serve the process otherwise, he may give permission by an endorsement signed by him on the original process for service to be affected by registered post or by the recorded delivery service or in such other manner as may seem to him appropriate or sufficient and such service shall be deemed to be sufficient service; or

a solicitor represents that he is authorised to accept service of a process on behalf of any defendant, such service may be effected by the delivery by any person of a copy of the process to that solicitor provided that the solicitor endorses and signs on the original a memorandum stating that he is so authorised as aforesaid and that he accepts service accordingly.