Upvote:5
To exchange your Czech (or any foreign license) for a British drivers license, you must fill out DVLA form D1.
That form includes the question βAre you currently disqualified in any other country?β
Lying on this form is a criminal offence.
You are also required to provide your existing license, which will be returned to the Czech issuing authority during the exchange process - its probable that they will also confirm your details and eligibility with the Czech issuing authority at that point as well, and identify your ineligibility at the same time.