Subscriptions are due annually by the end of January

They can also be paid for the coming year in advance any time after the start of October.

We use PayPal to enable you to pay online securely. Use the buttons below to select the membership type you require. If you are a new member and have just joined COL, please click here for full instructions.


You will receive an email each month that includes a link, so that you can download the bulletin in PDF format. You can download versions for both reading on screen, or printing out.

Electronic only subscription £11

Paper, including optional electronic

You will receive a paper copy of the bulletin each month via the postal service. You can also choose to receive the electronic version as well at no further cost. Printing and postage costs are significant, so the subscription rate is higher.

Within the UK £39

Overseas £85

New Members

N.B. If you join COL part way through the year, you only need to pay pro-rata, e.g. anyone joining in July should only pay 50% of the appropriate subscription rate (listed above). Please calculate the amount you owe to the nearest pound and use the donate button below to send it to COL.

Before you do it, to ensure you receive your monthly bulletins, please make sure you have submitted your details via the online membership form!