Thanks for reading the thread and for the link O.C.
The description of those sheets seems to be primarily for crafting - using marker pens, making windows for models etc. Though it does say they're 'printable' there's no mention of them being coated or specifically for use in ink jet printers or for OHP purposes. I'll certainly check them out when I'm in Hobbycrafts. I think that with all acetate sheets, much depends on the make and model of printer.
I used to use these coated OHP acetates, which are now 50 sheets for £12.06 (were £15.03 in 2012!):
https://www.amazon.co.uk/INKJET-CLEA.../dp/B000KJO7BO
They were excellent when I had an HP Photosmart printer, but when that died on me and I bought an Epson the results were very poor whatever setting I used for printing. I've tried all of the settings in my printer software, but none of them produce acceptable results with those sheets. I wrote a review on 29 March 2012 entitled 'Excellent sheets - blame Epson, not the acetates!'
https://www.amazon.co.uk/gp/customer...SIN=B000KJO7BO
On 10 October 2012 another user with an Epson ink jet wrote a review entitled 'Epson experiments paid off':
https://www.amazon.co.uk/gp/customer...SIN=B000KJO7BO
The ten most critical ( 1star) reviews of those acetates are for 2019, which suggest that the sheets differ from the originals and are inferior.
In trawling internet, I've come across these, which sound promising.
https://www.amazon.co.uk/Inkjet-Acet...5QCETSWZFX7GST
Of the reviews, 86% are 5 star, 14% are four star, and no critical reviews:
25 x A4 OHP Inkjet Acetate Film Sheets 135 Micron, Instant Dry.
Reasonably priced at £9.49 for 25 = 38p each.
For now, I'm well stocked up with the micro-porous film sold by Homecrafts.