Smurfchops seems determined to upset the Irish! Asked to suggest a UK beach she suggests somewhere south of the border ;-)
Southwold (here in Sufflok) is lovely but there are some really superb beaches (just right for an evening stroll) not far from Newcastle-Upon-Tyne. Cullercoats and Tynemouth, for example.
I love the Norfolk coastline and Suffolk. North Devon/Cornwall is more dramatic and very beautiful. Lulworth and parts of the Jurassic coastline round to Lyme Regis are beautiful for an evening walk too
Ynys las to Borth,, the wonderful dunes to the rocky headland,, with the petrified forest at low low tides. Watching the suirfers and kitesurfers, birdwatching... I love it