Biggest parkruns: Bushy Park (1134), Southampton (718), Cardiff (637), Sheffield Hallam (623), Worcester (590), Chelmsford Central (581), Newport (579), Bromley (549), Black Park (549), Peterborough (509).
Median parkrun: Abingdon (181).
Smallest parkruns: Pendle (45), Barclay (45), Goole (44), Sheffield Castle (42), Beckton (42), Gainsborough (39), Pymmes (32), South Oxhey (28), Lullingstone (25), Limavady (21), Aldenham (17).
New records: Chelmsford Central (581), Newport (579), Maidstone (410), Long Eaton (375), Aberdeen (356), Wycombe Rye (315), Salisbury (311), Southend (299), Jersey (269), Tees Barrage (251), Birkenhead (244), Oakwell Hall (223), Woodbank (215), Market Harborough (209), Raphael (189), Ally Pally (183), Holkham (138).
There were 294 parkruns, 85 cancellations, and the total UK senior parkrun poulation was 61676. Such a shame there were so many cancellations, mostly weather related. Tarmac courses were particularly vulnerable.
On a personal note, I'd like to say I was one of the 32 at Pymmes, and found it to be a lovely parkrun, well worth a visit. The people there were very friendly, and the course was nice and flat.