Dr. M. Lloyd-Jones
David Martyn Lloyd-Jones was a Welsh Protestant minister, preacher and medical doctor who was influential in the Reformed wing of the British evangelical movement in the 20th century. For almost 30 years, he was the minister of Westminster Chapel in London. Lloyd-Jones was strongly opposed to Liberal Christianity, which had become a part of many Christian denominations; he regarded it as aberrant. He disagreed with the broad church approach and encouraged evangelical Christians (particularly Anglicans) to leave their existing denominations. He believed that true Christian fellowship was possible only amongst those who shared common convictions regarding the nature of the faith.
You can find a lot of his sermons on this website; mljtrust.org
You can listen to them or download them.
He wrote a whole exposition on the book of Romans in 14 volumes, which was written down from sermons he gave every Friday evening for 13 years, going over the Epistle of Romans verse by verse, chapter by chapter.