We're delving into the archive today with the first of two pieces from Tom Baker's time as the Doctor.

Today's video shows Tom Baker during a visit to Northern Ireland, switching on Christmas Lights to the delight of a huge, wonderfully noisy crowd!

Both pieces are decades old and their audio/video quality reflects this, but we hope their charm and interest makes up for the imperfect sound and picture. We'll be bringing you the second video very soon!