Is a 'cottage in the Cotswolds' likely to be serviced by a VM cable - probably unlikely, imo. (Stick your postcode in to
this page to check)
Assuming not, you need a BT landline. As far as I know, the other BT based phone companies can't connect you - ie BT will have to connect you and you will be tied to them for at least a year. (it may cost >£100 to
connect to BT 
)
Once you have a BT landline, you will need an ADSL supplier. Try the availability checker at
http://www.thinkbroadband.com/search/package/basic.html for a list of ISP's that supply your exchange.
TV wise - I would go with a cheap freesat reciever from
Argos ~£120 with installation (unless there is already a wall plate for the sat dish already in place).