Please find below some approximate pricing:

Powerflush - from £495

Megaflo Installations - from £4450. (depending on your current heating system)

Boiler Replacements - from £1695, from £2300 for Worcester replacements. (Depending on your current heating system)

Electrics

Fuseboard upgrade - from £350 (with certificate)
2 bed house rewire - from £1500
3 bed house rewire - from £1800
Kitchens installed - from £750
Bathroom suite replacement - from £550
Periodic / landlords certificate - from £120
Electric shower installation - from £200