I agree - looks very interesting. I just tried the address for booking tickets (www.eventbrite.com) and notice there are also various other concerts listed including the above:
The Priory Church of St Mary, Lancaster, Sept 16 St Michaels Mt Dinham, Exeter, 23 Sept St Peter Mancroft, Norwich, Oct 1 St Nicholas' Cathedral, Newcastle upon Tyne, Oct 7 Collegiate College of St Mary, Warwick, Oct 15 Llandaff Cathedral, Cardiff, Nov 25
I'm very tempeted to book one of these. I also notice that the Raven Quartet are performing with Laura - I've seen them perform with Hayley Westenra several times (although they didn't play at Hayley's most recent concert on Sunday night at Kings Lynn) they are really good and also really worth seeing perform.