If you need a good Umbrella, use Clarity Umbrella
Had to take a short Inside contract due to poor market. For any one who used to operate via Limited it appears extremely complicated for no good reason.
Lucy at Clarity was very helpful explaining every little detail. There was a lot of flexibility around contract clauses as well as money distribution between pension and salary, with Clarity going extra mile with looking into personal circumstances. A lot of personal touch unlike faceless large umbrellas.
Also, Clarity is very active in Contractor UK board, which is helpful when you deciding which Umbrella to choose.