| CPC H04N 21/4668 (2013.01) [H04N 21/251 (2013.01); H04N 21/4335 (2013.01); H04N 21/44224 (2020.08); H04N 21/4756 (2013.01)] | 8 Claims |

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1. A method of collating content information concerning content stored on a plurality of data stores of a content distribution system, the method comprising:
receiving a record action message corresponding to a recording of a content item on a data store of the plurality of data stores;
examining in response to receiving the record action message a collated content information source to determine whether it includes stored content item information corresponding to the content item;
obtaining, if the collated content information source does not include content item information corresponding to the content item, content information corresponding to the content item from a further content information source; and
storing the obtained content information in the collated content information source; and
receiving respective record action messages in respect of each of the plurality of data stores and examining the collated content information source in response to receipt of each record action message, such that the collated content information source collates content information concerning content items stored on the plurality of data stores.
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