I quoted the letter word for word.

Hi, After two notices from Indigo Park Solutions I have now received a letter from Wright Hassall Solicitors for failing to pay the Penalty Notice, and requiring me to make payment of £196. The letter states that failure to make payment in full or contact them to discuss repayment 'may result in us recommending to the Car Park Operator that the matter be enforced through criminal court proceedings. Such proceedings would require your attendance at a Magistrates Court.' Should I ignore this letter or reply, and if I need to reply what should I reply with? This is the first time Iv'e ever had to deal with anything like this!