We are renting it through a letting/estate agent currently so need to check our contract as someone has mentioned they may be a clause in it about selling.
In a similar position – our agreement would see us giving practically the same amount to the letting agent if we sold to the tenants as we would give to an estate agent if we sold to anyone else.
Be interesting to see how you get on with the CGT. Do you do a self assessment i.e. is the taxman aware that there is a rental income on the property?
edit – re CGT this is the list of occupations where exemption is applied:-
The main occupations which satisfy the rules for exemption are:
• agricultural workers living on farms or agricultural estates
• lock-gate and level crossing gatekeepers
• caretakers who live on the premises for which they are responsible
• stewards and greenkeepers who live on the premises they look after
• managers of public houses who live on the premises
• wardens of sheltered housing who live on the premises where they are
on call outside normal working hours
• police officers and Ministry of Defence police
• prison governors, officers and chaplains
• clergymen and ministers of religion, unless engaged on administrative
duties only
• members of HM Forces
• members of the Diplomatic Service
• managers of newspaper shops that have paper rounds
• managers of traditional off-licences, that is, those with opening hours
equivalent to a public house
• in boarding schools where staff are provided with accommodation on
or near the school premises – the head teacher, other teachers with pastoral
or other irregular contractual responsibilities outside normal school hours
(for example, house-master), bursar, matron, nurse and doctor
• veterinary surgeons who live close to the practice in order to respond
regularly to emergency calls
• managers of camping and caravan sites living on, or near to, the premises
• stable staff of racehorse trainers, who live on the premises and certain key
You should be fine if in the forces.