A few press articles appeared today in advance of tomorrow night's broadcast of The Secret Life Of Mrs Beeton on Masterpiece Theatre. JJ's character, Sam Beeton, has been described as lusty here. The article also finds that...

"The movie moves along at a brisk clip, with good acting and an informative look into how Brits lived in Victorian times."

Another article here thinks that JJ plays Sam with manic energy, but also liked it...  

"But its a worthy and touching portrayal of Victorian life and a woman with some modern ideas".

And this preview also recommended it...  

"the film is throughout lovely to behold...the cast is small but choice."