Umbrella & PAYE

[AppleCrumble]

Has anyone worked both Umbrella and Agency PAYE at the same time, and what are the implications?

[NotAllThere]

What two contracts? Your question makes little sense.

[Paralytic]

Has anyone worked both Umbrella and Agency PAYE at the same time, and what are the implications?

Unless you're looking for something very specific (in which case, what?), this is no different to asking "Has anyone worked for 2 employers at the same time, and what are the implications?".