Some points to consider. If you start today with an idea to build something like a hotel or stadium, on a greenfield site, probably one that the local council has in general principal agreed some form of development is likely to be approved, but where nothing specific has yet been mooted, it will take you about 10 years to see the final brick laid, the final shrubbery planted, the access roads surfaced, and utilities turned on. 10 years. If there are local objections, add up to another 5 years.
Wasps want the 'Wasps Nest'. But, can they have it, by 26/27/28? Not a chance if a project they can hijack has not already been 'in progress' for 5-7 years. That is the reality of our planning system. I don't know what it is like in Warwick, but in my district council, next door Stratford, it can take a year for even simple planning applications in areas where development is generally permitted, to get their first hearing (ignore maximum waiting times for planning applications, it simply doesn't happen round here).