WEBF,
Don't forget that the Jags could also have made use of their 30mm cannon had the need arisen. The GR7s don't have cannon because the 25mm Adens they were meant to use couldn't be made to work as advertised. IRR, they could have been with a bit more cash, but this wasn't forthcoming. Jackonicko has questioned why the old 30mm pods off the GR3s weren't used instead, but I can't recall if he got an answer. Something to do with them being incompatible?
The political consequences of using bombs is open to debate - but not relevant to the discussion here, since the Jag and GR7 could have delivered them (yes, I know the FA2 could have as well, but they tend not to be used in this role, as you know). Given the reaction following the rescue of the kidnapped soldiers, I suspect that the odd PII or CRV7 pod loosed off in the direction of the West Side Boys and their ilk wouldn't have raised too many eyebrows.