With a website name like Blighty you probably don't wanna read this...but I spent half a decade in Poland and missed absolutely NOTHING about UK. Yep. That's right. Nothing. With three exceptions:
1) Tea .. you can't get a decent cuppa in Poland so obvious answer is to stock up by the suitcase with your favourite brand before you go there. Useful currency too for bartering.
2)BBC Radio 4 ... not a totally insurmountable problem as a short wave radio will pick up BBC World Service.
3) Bacon sandwiches. The Polish have pork in abundance but somehow their agro revolution bred a different type of pig to ours...very fatty meat they call Boczek. Poles by and large are fond of very fatty meat dishes.
Apart from that in Poland...the food - fruit,veg meat and fish all tastes much nicer...all naturally organic from low budget small scale farming. T-Bone steaks at about £1 each.
Leading brand cigarettes about £1.20 per packet, extremely fine award winning lagers: Zywiec, Okocim, Lech, EB also ridiculously cheap compared to English prices.
70% of the country is green - undespoilt lush forest land as UK used to be and usually safe to walk about in.
Pace of life about 30 years behind us...about three cars on the road, people actually stop and talk to each other on the street.
With Westernism having now truly conquered this old Eastern Bloc country the bigger cities have everything as in UK including (unfortunately) Macdonalds, KFC, Marks & Spencers & Tesco selling all products available in UK. Though you may be stuck for custard, gravy granules or pork scratchings - three things which haven't quite got there yet.