I have ordered one of these and used the £25 off a £50 code which I was emailed but is also in the vouchers forum ( ZQ768).
Not sure if this may just be for existing customers or not.
Quidco give 8% for Marshall Ward but I'm not sure if that is calculated on the total ie £54.95 or after the £25 discount.
You will need to buy something else to take you to £50 but there are some ladies t-shirts on there for £5 or less.
Sorry if I haven't listed this properly, I'm quite new here, please let me know and I will amend it.