Since we’re experiencing heavy rain again you might be having issues with your drainage/toilet (like I am). If so please report it Severn Trent. The more people that report these issues the greater the chance that they will do something to address this.
You can report it online here (but my address-lookup didn’t work so had to resort to a long-winded webchat). However I called them on 08007834444 and they answered promptly.