If you are planning on laying a new lawn you should continue to prepare the area when the weather permits. You may have to leave this until March if the weather is wet. If you have a problem with moss you will notice this now and you will need to treat the cause,which is more than likely poor drainage. Scarify and spike established lawns. If you haven't already done so, this is a great time to leave your garden machinery into JW Tools to be serviced.