Can vouch for Stanwicks and swan will do fish up to 20lb the only problem being the A45 right behind one side of the water, Mallard is a better water but might be busy but i think a lot of the summertime anglers will of dropped off by then? Elsons I have never fished but was going to this year until the covids turned up.
That does make sense tbh I wasn't sure if that would be the case still
I did like elsons (blanked and it froze though) went on a carp. Com social years ago