The signs are miniscule, and the policy is obviously not consistently enforced.
@jonlubi - I thought it might be an insurance issue, hence alerting them to my 3rd party cover; but I realise having an 'insured cyclists only' rule would be hard to police, though I could flash the relevant ID/paperwork at the barrier.
I'll post updates. I'm interested to hear what's said about the cycling policy, but more concerned about this bloke's suitability for the role, and the welfare of my customers.
Is there really such a policy? Where is it written down--regulations for staff and students or some such thing? Sometimes, signs like this are accidentally left from when there was such a policy.
If there is a policy, challenge it on inclusive access grounds--as some people with mobility difficulties require their cycles as a mobility aid, it is potentially discriminatory to ask them to dismount and in this case by far the easiest course of action to allow access to all. Try finding out who negotiates insurance terms and when insurance is renewed (if soon, hopefully) and furnish them with these arguments.