50AO8USB Will do

I drove down a road which I have done for years and hadn’t been in the area for ten years when I got to the end two permanent bollards stopped me proceeding . when I realised I turned round as I turned round a police officer in a marked van was at other end I thought nothing off it and turned around and went the opposite way and left the road . When I got to the junction he was there blue lights blocking my exit I got out my car said what’s up he said . Can you tell me what you doing driving through a children’s play area I replied I’ve used this road lots of times to visit my dads alloment . I said I didn’t know it was blocked off at end I’ve not lived in that area for 10 years He said but why you driving through a children’s play area . I said I didn’t know it’s blocked off now . He replied yea but what ya doing in a children’s play area I said I’m not bothered I’ve done nowt wrong . He replied in that case ya not bothered walked away to his van . Started writing and talking on radio I went over and I said can I go on my way he said no I’m reporting your traffic offence RT88/496 driving elsewhere than roads .footpath/bridleway... I said there’s absolutely no signage regarding. No through road for vehicles No warnings children’s play area , Only signage is warning low bridge height restrictions so vehicles can pass under I’ve just received an offer of £50 fine . Do you think I should take to court thanks