[10] The regiment was formed around the existing communication capabilities of the Special Air Service (SAS) and Special Boat Service (SBS), namely 264 (SAS) Signal Squadron based at Stirling Lines, Herefordshire, SBS Signal Squadron based at RM Poole, Dorset and 63 (SAS) Signal Squadron (V) of the Territorial Army (now known as Army Reserve).

[16][17] The regiment is tasked to deliver the "military CIS capability to enable UK Special Forces operations worldwide in support of Government, Foreign, Security and Defence Policy" with operators providing close support to the SAS, the SBS and the SRR.

[19][1] Prior to attempting the UKSFCC, applicants have the option of attending a 3 week SFC Preparation Course.

[1][18] Applicants for reserve service in 63 (UKSF) Signal Squadron have to successfully pass an Assessment Course conducted over three weekends and then complete a two week Royal Signals Communications Training course to be eligible to be accepted as Fit for Appointment to the squadron.

[15] The applicant is then posted to the squadron to carry out a probationary year completing mandatory courses and a two week training exercise to achieve Fit for Mobilisation.