 Only St Mark's Chapel and a barn were repaired, until the 1380s and 1390s when the towers, gatehouse and barbican were reinforced.By 1450 private houses had been built within the walls, Fore Street had been extended over the moat and its military value was reducing.It the 1540s John Leland described the castle as "all going to mere ruin" and part collapsed in 1548, with a house being built on the site.