I have just completed a quick search in the WTR for the Llanelli area and the 3 pages of results are in the link below:http://tiny.cc/oe6rby
When searching in the WTR you are possibly not setting the search parameters correctly if you are only getting national stuff ie, selecting 'Business radio' as 'License type' and then in the drop down box below, select 'Business radio (technically assigned)'. Leaving the 'Between these frequencies' boxes blank will display licenses on all frequencies.
Also dont forget that some radio users in Llanelli may actually be registered out of the area (at head office for example) and more importantly the WTR is run by a government agency so is a pile of crap a lot of the time, but has proved to be quite accurate in my part of south Wales.
Interesting to note on the list are 'Storenet Radio Systems Limited', this is the same company that runs my local shop/pubwatch and are registered in Cardiff. They still use analogue in Caerphilly where I am at present and is busy day and night most occasions but of course it is possibly now DMR in Llanelli which is the way things seem to be going unfortunately.