Better priced than other NCP car parks in the area and very well placed for the local businesses. However, it's not covered and sometimes has dodgy characters hanging around selling used tickets but there are cameras around.
Also, sometimes the card machine doesn't work. Apparently this is a regular occurrence coz it's solar powered - in Manchester! Try wiping the solar panel and trying again. If it still doesn't work, give the careline a call (number above machine) and someone will be around, usually within a few minutes.