At this moment in time, we don't offer a bolt-on for MMS usage, and if you need to send Multimedia Messages, we recommend using a third-party app such as WhatsApp or Facebook Messenger to do so as the transmission will utilise mobile data, which will be decremented from your inclusive data allowance, at no cost.

Standard rate charge for MMS sent via the cellular network is 40p per message. https://www.plan.com/pricing

When using a third-party App, your inclusive mobile data allowance will be used multimedia will be transmitted via your mobile data service with the data used to make the transfer being decremented from your allowance.