Not in my area (north west London). If they can't deliver a RMSD item it goes back to the Delivery Office. From there I can go and collect it, request re-delivery, or if I remember correctly redirect it to my local Post Office.
P.S. I should add that I've not had any Royal Mail or Parcelforce items delivered to neighbours (or taken in by me for neighbours) for as long as I can remember. They all go back to the Delivery Office (for RM) or depot (for PF). I often take in parcels from other couriers for neighbours but not RM or PF.