ZA's point about using airfield location at the beginning and the end of the transmission a la US CTAF though not mentioned in the above CAA document is a point well made: from overhead our strip (same strip as ZA) I have heard a/c making approach broadcasts without mentioning any airfield name: I only excluded our airstrip in the Tx when runway orientation mentioned didn't compute.
RTFM.
See CAP 413 Chapter 4 Section 6 para 6.2.2. To save you the trouble of looking it up, it says
SAFETYCOM is a single common frequency and pilots should be aware of the possibility of congestion and breakthrough. It is particularly important when using SAFETYCOM that RTF transmissions identify the aerodrome name (suffixed 'traffic') in order to indicate the relevance of the report to other aircraft. Transmissions must be correct and concise.