Hmm.
well I'd personally take a look at either the new wanhao:
http://www.wanhaouk.com/collections/.../duplicator-i3
Which is an irpusa i3 base - so plenty of both knowlege and files for upgrading around.

A flashforge creator: http://www.ebay.co.uk/itm/3D-printer...item51c06457d2
Again - great printers and lots of info, upgrades etc readily available.

or this one: http://www.ebay.co.uk/itm/3D-Printer...item235312899a

Don't sweat too much on accuracy and print resolution. No desktop pr9inter will exactly duplicate the models' measurements.
After a few prints you learn your particular printers foibles and adjust accordingly.
So you can generate models down to a few hundreths of a millimetre with any of the above.

And alternative would be a delta kit - like this one: http://www.ebay.co.uk/itm/3D-Printer...item23521b571d
http://www.ebay.co.uk/itm/3D-Printer...01378845&rt=nc

realistically for that price you're looking at an i3, kit or built a delta kit or a makerbot clone.
All of which will do the job :-)

Whereabouts in the uk are you ?
My workshop is always open for demos, chats etc :-)