Please, please, please check with CC what warning lights you have. Although modern Fords may have oil level warning lights (probably only tell you when the level is well low)I would not have thought this would have been carried over to a Caterham installation.
If you've broken an engine mount by whacking the sump then I would want to check all is OK inside.
On a K series OP & WL sensors are rather vulnerable but not to sure where they are fitted on a Ford.