Wedding Food

Anyone know of any barn-style venues in Warwick or Leamington which allow outside caterers or a less formal grazing style platter format?
I am struggling to find somewhere which allows me to choose my own caterers and venues want to charge extortionate amounts per person. My guests are more into dancing and chatting and we’re marrying later in day so don’t want our day taken up sat at a table eating boring courses. Lots of places say they are flexible but really are not (or they want to charge the same for less food!).
I dont have a strict budget as such and could easily efford the set menu options but thats not my thing and I dont want pay for something I dont want. My wedding must be local to Warwick/Leamington as we have kids which will need to go home before evening and also elderly family members. If anyone has any ideas it would be appreciated! 😁🥂