The Home Guard Special Intelligence Patrols in the United Kingdom, formed during World War II, were tasked with unconventional roles such as sabotage and intelligence gathering in case of invasion by enemy forces. They were often comprised of volunteers and operated with a high level of secrecy. This organization was critical during wartime for conducting reconnaissance and supporting defensive strategies.

The Special Reconnaissance Regiment (SRR), which is part of the United Kingdom's Special Forces, can be seen as a modern counterpart in terms of intelligence and reconnaissance missions, although the SRR was officially established much later, in 2005. Both the Home Guard Patrols and the SRR focus on gathering crucial intelligence, albeit in different contexts and eras. The SRR conducts operations globally, often relying on high-tech surveillance methods and working in conjunction with other special forces.

The connection between the two lies in the shared mission of intelligence gathering and supporting national defense through covert and reconnaissance operations. While the Home Guard Patrols were a branch of civilian volunteers primarily engaged in homeland defense, the SRR is a professional unit with specialized military training and capabilities, incorporating advancements in technology and tactics.

For more detailed information on their operations and historical context, you might explore sources such as:

1. The National Archives UK
2. Books like "Churchill's Secret Warriors: The Explosive True Story of the Special Forces Desperadoes" by Damien Lewis which detail wartime intelligence efforts.

These resources provide insights into the evolution of British intelligence and reconnaissance from World War II to today's special forces operations.