Can anyone recommend a guide to see the top of the rock?
I like that you've placed this topic in the England section ; )
I've taken two guided tours of the Rock (visited on two separate occasions with different groups of people). On both occasions I went with one of the guides who tout their services outside passport control on the Gibraltar side, one guide was excellent the other not so good. Unfortunately I don't recall either of their details but if you don't want to book a guide in advance and have the worry of making it to the appointed time then it's worth bearing in mind that you can pick up a guide at any time. They're all regulated so you won't get scammed, prices are clearly displayed and my only advice is to trust your instincts on which person to opt for.