The plea is correct. Perhaps in the 19th century it was understandable that citizens thought the parklands suited all sorts of economic and private sports club purposes. That was when people lived nearby and walked to the parklands. Any commercial use involves traffic and parking space to be cut from the green (have a look beside Montefiore Road right now). At the least, any leases for private businesses and clubs should be published annually with the rentals they pay (or do not pay?).