That will generally mean that the security has to cover a sufficiently high percentage of the organiser's turnover in respect of packages, and may depend on factors such as the type of packages sold, including the mode of transport, the travel destination, and any legal restrictions or the organiser's commitments regarding the amounts of pre-payments he may accept and their timing before the start of the package.

The roaming provider availing of this Article and any contractual partners within the meaning of point (b) may, as an alternative to the undertaking referred to in point (d), undertake, as from 1 July 2015, or as from the date of notification, whichever is the later, that any roaming surcharges applied in addition to the applicable domestic service rate in its various retail packages are, in aggregate, no more than 50% of those applicable in those packages on 1 January 2015, irrespective of whether such surcharges are calculated on the basis of units such as voice minutes or megabytes, of periods such as days or weeks of roaming, or by a ...[+++]ny other means or combination thereof.

Key information, for example on the main characteristics of the travel services or the prices, provided in advertisements, on the organiser's website or in brochures as part of the pre-contractual information, should be binding, unless the organiser reserves the right to make changes to those elements and unless such changes are clearly, comprehensibly and prominently communicated to the traveller before the conclusion of the package travel contract.

(d) the roaming provider and any contractual partners within the meaning of point (b) each undertakes to make available and actively offer, at the latest as from 1 July 2015, or as from the date of notification, whichever is the later, such tariff options in retail packages which, on 1 January of that year, were used by at least 50% of their respective customer base.

(c) the roaming provider and any contractual partners within the meaning of point (b) each undertakes to make available and actively offer, at the latest as from 1 July 2014, or as from the date of notification, whichever is the later, at least one retail package with a tariff option according to which the applicable domestic service rate applies to both domestic services and regulated roaming services throughout the Union, as if those regulated roaming services were consumed on the home network.

We also give quite a bit of credit to Correctional Services of Canada for their efforts to try to improve the grievance process, which is to some extent reflected in their contracting or commissioning David Mullan, who is one of Canada's leading authorities on administrative law, to take a look at the review process and how it could be improved.