Alum
In 1615 Ingram received the grant of Sheriff Hutton Park, in the Forest of Galtres, and over the next years built the New Lodge there as his country residence. Ingram, Johnson, Martin Freman and George Lowe in partnership became the new farmers of the alum works upon more favourable terms. The ill reputation which had seen him driven from court still pursued him, however, and a commission was set up to report into claims of fraudulent dealings. Lowe complained he had been drawn into the partnership unscrupulously, and in 1618 a scandal broke as it was proved that the Lord Treasurer, the Earl of Suffolk, who was on trial in the Court of Star Chamber for various offences, had engaged in corrupt transactions with Ingram. Ingram however escaped severe punishment and continued his close involvement, gaining sole lease in 1621. Though his management probably brought him little profit or popularity with his employees, he doubled the productivity of the works and built up an export trade, setting the direction for the continuation of the industry.
In Yorkshire Ingram found for patron and associate Thomas Wentworth, Custos rotulorum for Yorkshire. Ingram was High Sheriff of Yorkshire in 1619–20, and was returned M.P. for Appleby, Westmorland for the parliament of 1620–1. Letters from late 1620 show him in Wentworth's interest for re-election as Knight of the Shire, and the hospitality of his house requisitioned for that purpose. In the following year his son and heir Arthur was knighted, and in 1622 Ingram made his purchase (for £12,000) of the neglected mansion of Temple Newsam, near Leeds, from Ludovic Stewart, 2nd Duke of Lennox, with its prestigious royal associations as the birthplace of the King's father, and commenced a 12-year rebuilding project there. His brother Sir William died at York in 1623.
The York Corporation, with expressions of appreciation for his goodwill towards them, enlisted his help in resolving differences with Hull over lead and corn, which were brought to a successful conclusion in 1623 through the offices of Lionel Cranfield, now Earl of Middlesex and Lord High Treasurer. Ingram was rewarded with the freedom of York, exempt from duty in municipal office. Wentworth, meanwhile, had been forced to give up his London position as Receiver of crown lands and return to Yorkshire. In February 1624 Ingram became MP for York. Having failed to support his friend Cranfield's opposition to a Spanish War, instead advocating practical measures dependent upon the royal intention, he was then drawn into, and contributed significantly towards, proceedings for Cranfield's impeachment over land transactions from which he himself had benefited at Cranfield's expense.
Wheels were already in motion to unclamp his hold on the alum monopoly. Sir John Bourchier, who in 1622 was released from all crown debts relating to it since 1611, made a formal proposal to amalgamate the alum and soap businesses, with compensation to Ingram, but then neutralized Ingram's interest by bringing charges against him for misappropriation of funds and breach of contract. Ingram was arrested and taken to London in October 1624. Such was the evidence presented to the resulting Exchequer Commission that Ingram was obliged to surrender the business in February 1625. However, through his favour with the King, and the larger processes surrounding the Statute of Monopolies of May 1624, he escaped from the affair very lightly.
Following the King's death in March 1625 and the accession of King Charles, he was returned as MP for the city in the next three parliaments, in 1625, 1625–6, and 1627–8.