Arden Buy price for MOD at 52p, page-4

Hi Mike, moved a couple of £k intending to buy MOD via lse on Thursday but I was being quoted 14.9 when the spread was supposedly 13-15p

I make MOD Mcap @ AUD$57.17m or approx £32m though lse gives it a more generous £34.80m.
Is this one of the reasons lse trading has been all but non-existent compared to asx or just a fact that the only holders are on ASX?

The lack of activity is clearly clouding my judgement as in theory it should mean it's the time to buy.
I just get the impression that arbitrage is with asx over lse at the moment and it's one of the reasons I have hesitated.
¯\_(ツ)_/¯