We had engine blanks that were only used in adverse weather. Jet pipe covers even less. There were also 'spats' to cover the wheels. When we took an aircraft to Bitteswell they would become agitated if we didn't have all the kit. Of course we never did.
Wasn't a problem for me. I used to service the Vulcan hydraulics so I was constantly working on the brake units etc. We used to have our own covers which (if memory serves me well) I used to keep underneath my toolbox.