If you disturb a mum with babies
Most of us only venture out into the garden during the warmer months of the year and this is unfortunately the time of year mums with babes can easily be disturbed.
If you do disturb a mum whilst you're gardening simply cover back up and leave alone. If that pile of rubbish or logs has been there all winter surely another few weeks will not hurt.
However if you do have to move the nest call a local carer or the RSPCA who can lift the whole thing with mum and babes and they will normally take with them. They will either find another suitable nesting site or take back and place in a hutch to keep an eye on mum and how she reacts. In this way if she shows signs of rejecting the babies the carer can step in and take over as mum. If mum hog is not too upset she will get a helping hand during those few weeks when she needs it most.
If mum runs away then cover back up and leave for a few hours keeping an eye at a discreet distance. You may find mum returns and moves the babies herself. If she does return but does not move the babies from the nest and for whatever reason the nest needs to be moved then call a local carer and they will do the job for you.
NEVER touch the babies with your hands always use gloves or a towel. If the babies smell changes then it is likely that mum will reject the babies.