Ref 28 day rule..
Theres nothing to stop you flying more than 28 days a year.
But if there,s a Nimby who reports this to the council they could restrict you to the 28 days..
And IF you fly more than 28 days, make sure you keep a log of all your flights because IF no one complains, then you can use this as evidence if you apply for planning permission later on to increase the use of or to change the use of your field to an airfield.....