I've been playing it for several weeks - and it's a good 'un!
The machine name is ridiculous as it's labelled as 'Random Poundstretcher' - despite there being nothing random about it whatsoever.
The pound signs on the winline are frequent and activates a flashing light across the many amounts on the top glass; starting at £1 and going through scattered amounts like £9, £11, £14 up to £20 (which it never awards). Most of the time it'll give you 3 shots totalling £5, occasionally more.
Being a 50p/£70 JP machine with no other wins than JP and the feature it has a huge streak lurking within - I've had a £210 and seen someone get £280 - usually by nudging in the pot and it holds.