new gas boiler in 600sqft flat

emy_77

Hi,
Hope everybody's well.
I would like to install gas combi boiler central heating. The property currently has electrical hot water system and storage heaters. The property is 2 bedroom flat at London E16. I have got quotes from a few installers as below. Would appreciate if you can help inform if they are reasonable, and also if you have any comments on the work. The quote includes removal of the hot water boiler and 6 nos storage heaters.
A 3,820.00 Worcester 6 radiators and thermostatic radiator valves to kitchen, reception room, bed 1, bed 2, hall and bathroom
B 5,623.50 Keston 5
C 5,200.00 Vaillant ecoFIT pure 825 + flue 5 (bedrooms, hall, kitchen and living room)
British Gas 6,810.00 Worcester Bosch Greenstar 25i ErP 7 (Small, Medium (x4), Large, towel warmer)
D 7,950.00 Viessmann 6

Sorry, I can't paste link to put in proper table
Thank you
Regards,