Postscript
In the period I could not get the filter off, I found this removal tool, which has just arrived in the post.
I mention it as many sizes are available and it would be very easy to order the wrong size. Although I have not used it yet , it seems to be a perfect fit and very sturdy, the code on it is 905
https://www.ebay.co.uk/itm/13mm-Square-Drive-15-Flutes-Cap-Style-Oil-Filter-Wrench-73mm-Inner-Dia/191682964055?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2648
