Yeah, £40k is plenty.
If they take a Foundation Degree in Computing and IT Practice with the Open University, they could do the entire thing for £11k over 4 years part-time, which is effectively the first two years of a university course with a qualification at the end.
Or get a BSc (Honours) Computing and IT for £16k full time over 3 years.
Other courses in Business and/or Computing/IT...
Professional Certificate in Management £3k over a year part-time.
Certificate of Higher Education in Business Management £5.5k over 2 years P/T, 1 year F/T
Diploma of Higher Education in Computing & IT and a second subject £11k over 4 years P/T, 2 years F/T
Diploma of Higher Education in Business Management £11k over 4 years P/T, 2 years F/T
BA (Honours) Business Management £16k over 6 years P/T, 3 years F/T
The certificate/diploma courses would give them a grounding and credits toward a full degree if they want to do that later on.