Alex Jones, 43, was joined on The One Show by her co-star Gethin Jones, 42.The Welsh-born presenter took aim at Strictly Come Dancing professional Anton Du Beke, 53, in a cheeky dig after he appeared on the programme via video link.The Strictly star and his colleague Amy Dowden, 28, both showcased their dance moves for Strictly's Keep Dancing Challenge ahead of BBC's Big Night In.It will see Children in Need and Comic Relief coming together for the first time to host a special night of television, offering "some light relief and entertainment" amid the coronavirus pandemic.Every day this week, a Strictly professional has shown viewers a dance sequence to follow.As the camera cut away to Anton's home, the BBC favourite gave fans a quick.