Short and sweet - multimeter confirmed dead cell(s) in car battery (10v reading...), so I need a replacement... Issue is, every website that I use the "insert registration and we'll find the right batteries!" feature brings up batteries with a length of 242mm, whereas the one currently fitted (OEM Exide EFB) is a 207mm unit. And the housing definitely won't fit an extra 35mm... Specs for current battery are: 207x175x190mm 55Ah 450A Start/Stop (presuming EFB, but just says "stop & start") Go, But-Tech, go!!
I bought our last battery there, a high quality Varta one for less money delivered, than the "cheap" battery from the local National Tyres branch (was a bit skint) , that struggled in cold weather after just 3 years.
That seems to tick all the boxes, and it isn't the £240+ that the Bosch alternative seems to go for either, which is another huge plus. Less than £100 all in inc. delivery before 10am Tuesday. Hopefully this is all I need to fork out to get it up and running again!