I have done trackdays with LoT and can confirm they are very well organised and very much like C&L7C ones with no problem with driving standards , I havent had to worry as my car has a cage but below is from their T&C from the website
20. Lotus, VX220/Speedster, Alpine, Ferrari, McLaren & Porsche cars registered after 1995 do not require a roll-cage.
All other cars registered after 1995* plus ALL cars regardless of manufacturer registered before 1995 must have a full 6 point approved roll-cage.
All Caterham type vehicles must be fitted with an approved Roll Over Protection system(ROPs). In addition, all Caterham type vehicles must be fitted with a 6 point approved roll-cage at Brands Hatch GP, Bilster Berg, Dijon, Spa Francorchamps.
* An exemption may be given depending on the type of car & venue. Requests must be made in writing at least 48hrs before the event start.