Sorry to delay in replying but I have been away on holiday.
I had my Y chromosome done by Oxford Ancestors Limited, PO Box 288, Kidlington, Oxfordshire. OX5 1WG
e-mail: enquiries@oxfordancestors.com.
Their website is www.oxfordancestors.com
The fees are quite expensive but mine was done through a Family Association who negotiated a discount for fifty plus members.
I paid £100 and I think the normal cost is about £150 for a full DNA