Doesn't sound like it from you've described and if the CU is only 5 years old 'presumably' the earthing/bonding was checked and upgraded if necessary then?So basically there is no real need to have a new run from the consumer unit downstairs
The CU if 5 years old probably wont be 18th edition and the sparks may want to upgrade that too, especially as under a staircase (Wooden)? damaged or IP rating impaired, but if properly MCB/RCD protected then it should be fine for continued use (unless evidence of thermal damage).
Ceiling construction/insulation may determine if possible to install recessed lights (building inspector will probably advise).
6 (double) sockets is generally a bit OTT for a bedroom.
The UFH will only be about 200w (max) so should be ok off existing circuits.
Any existing wiring may need re-routing if in 'the way' which will add time and therefore cost.
Any aerial cabling/amplifier in attic (often overlooked)!