It was looked at in 2010 and the reality was the cost and risk was so high that the RN would only keep one of the two CVF class in service. The other would have been scrapped as soon as it was completed.
The risks were considerable and would have massively delayed return to fixed wing carrier ops for very limited benefits (the CTOL carrier offering fairly limited operational advantages for the likely air wing that the UK would concievably use). The value of the design is not that great, and I'd rather see the money spent on more ships, than buying a fanboy platform of limited value.