English invasion of Scotland (1400) English invasion of Scotland (1400) The English invasion of Scotland of August 1400 was the first military campaign undertaken by Henry IV of England after deposing the previous king, his cousin Richard II. Henry IV urgently wanted to defend the Anglo-Scottish border, and to overcome his predecessor's legacy of failed military campaigns. A large army was assembled slowly and marched into Scotland. Not only was no pitched battle ever attempted, but the king did not try and besiege Scotland's capital, Edinburgh. Henry's army left at the end of the summer after only a brief stay, mostly camped near Leith (near
Pontefract Castle France. Pontefract also has an "torre albarrana", a fortification almost unknown outside the Iberian Peninsular. Known as the Skillington Tower, the detached tower was attached to the north wall by a bridge. Its purpose was to increase the defender's range of flanking fire. Wakefield Council, who own the site, commissioned William Anelay Ltd to begin repairs on the castle in September 2015, but work stopped in November 2016 when Anelay went into administration. The Council then engaged Heritage Building & Conservation (North) Ltd, who began work on the site in March 2017. A new visitor centre and cafe were opened