The LSWR M7 class is a class of 0-4-4T passenger tank locomotive built between 1897 and 1911. The class was designed by Dugald Drummond for use on the intensive London network of the London and South Western Railway (LSWR), and performed well in such tasks.

In his new post, Drummond immediately set to work on a new class of tank engine, with the intensive suburban services from Waterloo in mind. They were developed from the Adams T1 and O2 classes with modified boilers and an increase in boiler pressure and cylinder size.

Dugald Drummond became Locomotive Superintendent of the LSWR in 1895 (his title changed to Chief Mechanical Engineer in 1905) and his first new class after continuing construction of some Adams designs was the M7 0-4-4T.

After moving to Bournemouth in December 1963 30053 was one of four M7 class locomotives to operate the last push-pull services on the Southern Region. The engines were employed on the Swanage and Lymington branches and the services to Ringwood and Brockenhurst. It was withdrawn from service in May 1964 but ran to Nine Elms at the end of June 1964.

The LSWR required more powerful locomotives to support the increase of commuter traffic from the southern suburbs into London. The resulting M7 class was the largest and heaviest 0-4-4T to ever be used in Britain.

These London & South Western Railway M7 0-4-4 tank locos were designed by Drummond, and built in two batches between 1897-1911. The Class eventually comprised 105 locos. The latter 50, originally classified X14, had longer fames with a noticeable overhang at the front end, and many of them were push-pull fitted.

Dugald Drummond became Locomotive Superintendent of the LSWR in 1895 (his title changed to Chief Mechanical Engineer in 1905) and his first new class after continuing construction of some Adams designs was the M7 0-4-4T.

The LSWR M7 class is a class of 0-4-4T passenger tank locomotive built between 1897 and 1911. The class was designed by Dugald Drummond for use on the intensive London network of the London and South Western Railway (LSWR), and performed well in such tasks.

2023年8月25日 · 为推动新修订的ich指导原则在国内的平稳落地实施，我中心拟定了《<m7（r2）：评估和控制药物中dna反应性（致突变）杂质以限制潜在致癌风险>正文、问答及附录实施建议》，同时组织翻译了m7（r2）指导原则正文、问答及附录的中文版。

The LSWR M7 class is a class of 0-4-4T passenger tank locomotive built between 1897 and 1911. The class was designed by Dugald Drummond for use on the intensive London network of the LSWR and performed well in such tasks.