Virgin Media O2 has debuted an affordable new mobile plan designed to help people on low incomes stay connected. Dubbed the O2 Essential Plan, it costs £10 a month and offers 10GB of mobile internet, unlimited calls and text messages. Apply for the O2 Essential Plan SIM for £10View Deal | Get 20GB of data + unlimited calls with £10 Giffgaff SIMView Deal | Get 30GB of data + unlimited calls with £8 Vodafone SIMCreated for those who receive a range of benefits, the O2 Essential Plan is available as a 30-day rolling contract with no activation or early exit fees. Virgin Media O2 will not increase…