UPDATE

BT Comms: Following a technical fault impacting voice services on our network earlier today, we have now resolved the problem and the service is running as normal. We sincerely apologise and recognise the inconvenience this may have caused.

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We would like to inform you that there is currently an interconnectivity issue affecting several mobile carriers in the UK. As a result, you may experience intermittent difficulties when calling numbers hosted by these operators.

This issue lies with the mobile carriers themselves and is impacting various service providers. Our technical team is actively monitoring the situation and working with our upstream partners to ensure updates are communicated as soon as they become available.