Commentary on Sections Part 2: Networks, Services and the Radio Spectrum Chapter 1: Electronic Communications Networks and Services Section 61: Withdrawal of telephone number allocations
161.This section sets out the circumstances in which OFCOM may withdraw an allocation of telephone numbers.
162.Subsection (2)(a) and (b) provides that an allocation may be withdrawn by consent, or where this is necessary for a transfer of numbers. Subsection (2)(c)  and section 62 provide that an allocation may be withdrawn to facilitate a “numbering reorganisation” in respect of a particular series of numbers. Subsection (2)(d) provides that an allocation may be withdrawn in circumstances specified in numbering conditions and for the purpose of securing the best and most efficient use of telephone numbers (subsection (5) provides that subsection (2)(d) does not apply to a numbering reorganisation and that any circumstances specified in a numbering condition must not unduly discriminate between communications providers and users). Subsection (2)(e) and (f)  provides that an allocation may be withdrawn where it consists of numbers, or part of a series of numbers, which have not been adopted by the communications providers concerned during the time period stipulated in the general conditions. Before withdrawing an allocation under subsection (2)(e) or (f), OFCOM must follow the procedures set out in subsections (6) and (7) with respect to notification and allowing for representations.
163.An allocation may also be withdrawn where the person allocated the number has repeatedly and seriously contravened the numbering conditions and where no other remedy is likely to secure compliance. Any contraventions of numbering conditions may justify withdrawal of numbers from a non-provider (subsection (4)). This implements Article 10(2) and 10(5) of the Authorisation Directive so far as enforcement of numbering conditions is concerned.