Badger cubs are normally born in January, and it is a busy and hungry time. Problem is, badgers can cause quite a bit of damage, so if it is a new phenomenon- do try and deter them from establishing territory before they consider themselves at home! Badgers are hugely territorial and rely on scent. They have an anal gland, with the scent of the clan, and will 'sit' regularly to mark the ground and also each other.
One of the first thing to try is to find where they are coming in- and get all the males in your household to take a walk to the garden as often as poss and sprinkle the area with their urine (and try not to get arrested!) - at night might be best if overlooked ;)- the sooner the better.
BTW Pam Mynott is an ex teacher and lives quite near in the small town next to you that begins with an O.