After returning to England, Felton lived in London for nine months. Although his mother, brother and sister lived in the city, he did not stay with them but lived in a lodging house. Those who encountered him during this time later described him as being taciturn and melancholic. His sister recalled that, since his return from Ré, Felton had been "much troubled by dreams of fighting". This was possibly indicative of what would be described as post-traumatic stress disorder in modern terms. During this time, Felton submitted petitions to members of the Privy council over two matters, £80 of back-pay he believed he was owed, and his promotion to captain, which he believed he had been unfairly denied. He had no success in resolving these grievances and came to believe the Duke of Buckingham was responsible for both of them.