Sorry for making you so upset. TBH, I thought the info above was OK, and you initially seem to grasp that, but obviously I have annoyed you for some reason, and for that I can only apologise
As mentioned, the issue was at the layer 2 level with ARP and the response for some reason not making it back to client when querying the gateway. This was a genuine query but I fear it has has deteriated.
Once again, thank your for you input.