Possibly your posts get deleted, because they are placed in irrelevant forums, or contain inappropriate content? I notice this topic is now (and not for the first time) running in two seperate forums. One of which is also about to get deleted. I am not about to get into the ususal debate on moderation with you, however provided that the moderator of this forum agrees, I will re-title your thread and leave this subject here.
I am not sure what your concern is. I am sure there are no end of people with insoles of one type or another in their shoes. Unless there is something particularly unusual about them that attracts the attention of the screener then I am sure you need not concern yourself. It is highly unlikley that anybody involved with security will discuss any of the procedures in detail, since many security protocols are necessarily restricted to those who are expected to exercise discretion and confidentiality.
Common sense should tell you that shoes are routinely scanned at all Uk airports and rubber insoles are not likley in themselves to cause a particular problem. What may cause a problem, is one of those protocols not likley to be widely discussed.