Alan, the current violinist in the band is Anna Phoebe. If you check back through the forum (primarily the reviews of this summer's gigs), you'll find that she's set quite a few middle aged pulses racing!
If you want to know more about her background, just put her name in your PC's search engine and you should get several hits, including her own website.
I texted the Lovebox set list to John O'B as I left the gig and he posted it that night (17th July). You'll currently find it on page 2 of the forum index, with the most recent post having been around 30th July.